diff --git a/.README.md b/.README.md
index 54ded0a..422562f 100644
--- a/.README.md
+++ b/.README.md
@@ -2,17 +2,7 @@
 
 This is my own custom config that I use on my GNU/Linux machines. Not meant to be used by anyone else.
 
-# Table of contents.
-
-1. [Bootstrap.](#bootstrap)
-2. [General info.](#general-info)
-3. [Load Gnome settings.](#load-gnome-settings)
-4. [Navigation.](#navigation)
-5. [Nvim config.](#nvim-config)
-6. [Bash commands.](#bash-commands)
-7. [To-do later.](#to-do-later)
-
-Additional references can be found in [.doc](.doc) directory.
+For references, go to the [doc directory](.doc).
 
 # Bootstrap.
 
@@ -22,728 +12,6 @@ Additional references can be found in [.doc](.doc) directory.
 curl -s https://git.voronind.com/voronind/linux/raw/branch/master/.bootstrap.sh | bash && source .bashrc
 ```
 
-# General info.
-
-It includes:
-1. Git config (excluding user info).
-2. Bash scripts and environment.
-3. Tmux config.
-4. Basic directory structure as well as redefining them as default.
-5. Custom bin directory.
-6. Collection of Linux configs (sshd, gnome, sysctl etc).
-7. GTK 3/4 configs.
-8. Htop config.
-9. Nvim config.
-10. SSH config.
-11. Custom background.
-12. Flatpak overrides.
-13. Custom fonts.
-14. MangoHud config.
-
 # Load Gnome settings.
 
 To load Gnome settings run `dconf_load`.
-
-# Navigation.
-
-Navigation principles are shared between Gnome, Tmux and Nvim. The only difference is the *"Leader"* key. Gnome uses *Super* key, Tmux uses *Meta (alt)* key and Nvim uses *Space*. The rest somewhat repeats itself.
-
-## Gnome
-
-Key|Action
----|---
-`Super+Esc`|Lauch Terminal emulator.
-`Super+q`|Switch to the left workspace.
-`Super+e`|Switch to the right workspace.
-`Super+Q`|Move window to the left workspace.
-`Super+E`|Move window to the right workspace.
-`Super+\|`|None.
-`Super+-`|None.
-`Super+w`|Toggle window maximize.
-`Super+s`|Minimize window.
-`Super+a`|Snap window to the left.
-`Super+d`|Snap window to the right.
-`Super+z`|Lock session.
-`Super+x`|Close window.
-`Super+c`|Minimize all windows.
-`Super+v`|Take a screenshot.
-`Super+f`|Toggle window fullscreen.
-
-## Tmux.
-
-Key|Action
----|---
-`Meta+Esc`, `Meta+t`|New window. `Meta+t` is for the Termux Android app as it can't send the `Meta+Esc` combo.
-`Meta+q`|Switch to the left window.
-`Meta+e`|Switch to the right window.
-`Meta+Q`|Move window to the left.
-`Meta+E`|Move window to the right.
-`Meta+\|`|Split vertically.
-`Meta+-`|Split horizontally.
-`Meta+w`|Switch to the above split.
-`Meta+s`|Switch to the below split.
-`Meta+a`|Switch to the left split.
-`Meta+d`|Switch to the right split.
-`Meta+z`|Detach from session.
-`Meta+x`|Close window.
-`Meta+c`|Close split.
-`Meta+v`|Visual selection. `y` to copy.
-`Meta+f`|None.
-
-## Nvim.
-
-Key|Action
----|---
-`Space+Esc`|None.
-`Space+q`|Switch to the left buffer.
-`Space+e`|Switch to the right buffer.
-`Space+Q`|Move buffer to the left.
-`Space+E`|Move buffer to the right.
-`Space+\|`|Split vertically.
-`Space+-`|Split horizontally.
-`Space+w`|Switch to the above split.
-`Space+s`|Switch to the below split.
-`Space+a`|Switch to the left split.
-`Space+d`|Switch to the right split.
-`Space+z`|Save all and exit.
-`Space+x`|Close buffer.
-`Space+c`|Close split.
-`Space+v`|Visual selection (or just default `v`).
-`Space+f`|None.
-
-More info in [Nvim config.](#nvim-config)
-
-# Nvim config.
-
-TODO: preserve default shortcuts, only add new ones when adding new functionality.
-
-## General info.
-
-* Run `:Update` to update everything.
-* File tree shows everything by default, telescope ingores git-ignored files.
-
-## Keymaps.
-
-### Common. TODO: separate visual and others from common.
-
-Mode|Key|Action
----|---|---
-Normal, Visual|`5dd`|Repeat following command N (5) times.
-Normal|`.`|Repeat input on selected line.
-Normal, Visual|`<Leader>.`|Repeat command on selected line(s).
-Normal|`zz`|Save all files.
-Normal|`ZZ`, `<Space>z`|Save all and quit.
-Normal|`ZQ`|Quit without saving.
-Normal|`v`, `<Space>v`|Visual selection (cursor).
-Normal|`V`|Visual selection (lines).
-Normal|`<C-v>`|Visual selection (block).
-Normal|`gh`|Go to the start of the line.
-Normal|`gl`|Go to the end of the line.
-Normal|`gj`|Go to the end of the file.
-Normal|`gk`|Go to the top of the file.
-Normal|`u`|Undo action.
-Normal|`U`|Redo action (*remaps*: undo whole line), (*default*: `<C-r>`).
-Visual|`u`|Convert selection to lowercase.
-Visual|`U`|Convert selection to uppercase.
-Visual|`~`|Toggle case.
-Normal, Visual|`;`|Enter command mode (*default*: `:`).
-Normal|`<Space>0`|Open shortcuts help.
-
-### Align.
-
-Mode|Key|Action
----|---|---
-Visual|`<Space>A`|Align selection from the right.
-Visual|`<Space>a`|Align selection from the left.
-
-### Autocomplete.
-
-Mode|Key|Action
----|---|---
-Input|`<C-Space>`|Autocomplete.
-Normal|`<C-Space>`|LSP autocomplete.
-
-### Comments.
-
-Mode|Key|Action
----|---|---
-Normal, Visual|`<Space>/`|Toggle selected line(s) comment.
-
-### File tree.
-
-Mode|Key|Action
----|---|---
-Normal|`<Space>1`|Toggle file tree.
-Normal|`<Tab>`|Toggle directory or open file for preview.
-Normal|`a`|Create file/directory.
-Normal|`x`|Cut file/directory.
-Normal|`p`|Paste file/directory.
-Normal|`f`|Filter.
-Normal|`F`|Reset filter.
-Normal|`d`|Delete file/directory.
-Normal|`r`|Rename file.
-Normal|`R`|Refresh.
-Normal|`s`|Open in system app.
-Normal|`S`|Search.
-Normal|`I`|Toggle gitignore filter.
-Normal|`y`|Copy name.
-Normal|`Y`|Copy relative path.
-
-### Fold.
-
-Mode|Key|Action
----|---|---
-Normal|`<Space>o`|Toggle fold.
-Normal|`<Space>O`|Fold everything.
-
-### Git.
-
-Mode|Key|Action
----|---|---
-Normal|`<Space>g`|Toggle git inspection mode.
-
-### Macros.
-
-Mode|Key|Action
----|---|---
-Visual|`mwx`|Unwrap selection (select the stuff inside wraps).
-Visual|`mw"`|Wrap selection in ".
-Visual|`mw3"`|Wrap selection in 3x ".
-Visual|`mw'`|Wrap selection in '.
-Visual|`mw(`|Wrap selection in ().
-Visual|`mw{`|Wrap selection in {}.
-Visual|`mw[`|Wrap selection in [].
-Visual|`` mw` ``|Wrap selection in \`.
-Visual|`` mw3` ``|Wrap selection in 3x \`.
-Visual|`mw*`|Wrap selection in *.
-Visual|`mw2*`|Wrap selection in 2x *.
-Visual|`mw3*`|Wrap selection in 3x *.
-Visual|`mw `|Wrap selection in spaces.
-Normal, Visual|`mmx`|Markdown: set - [ ] as completed.
-Normal, Visual|`mm `|Markdown: set - [x] as not completed.
-Normal|`mmp`|Markdown: insert paragrapg (2x non-breakable spaces).
-Visual|`mmb`|Markdown: make selection bold.
-Visual|`mmi`|Markdown: make selection italic.
-Visual|`mms`|Markdown: make selection strikethrough.
-Visual|`mmr`|Markdown: make selection a reference.
-Visual|`mmc`|Markdown: make selection a code block.
-Normal|`mi`|Copy and increment selected line.
-Normal|`ma`|Select all.
-
-### Navigation.
-
-Mode|Key|Action
----|---|---
-Normal|`<Space>w`|Switch to the split above.
-Normal|`<Space>a`|Switch to the split left.
-Normal|`<Space>s`|Switch to the split below.
-Normal|`<Space>d`|Switch to the split right.
-Normal|`<Space>q`|Swtich to the buffer left.
-Normal|`<Space>e`|Swtich to the buffer right.
-Normal|`<Space>Q`|Move the buffer left.
-Normal|`<Space>E`|Move the buffer right.
-Normal|`<Space>x`|Close the buffer.
-Normal|`<Space>X`|Close all invisible buffers.
-Normal|`<Space>m`|Move split.
-Normal|`<Space>\|`|Split vertically.
-Normal|`<Space>-`|Split horizontally.
-Normal|`<Space>c`|Close split.
-Input|`<C-h>`|Move left.
-Input|`<C-l>`|Move right.
-Input|`<C-j>`|Move down.
-Input|`<C-k>`|Move up.
-
-### Telescope.
-
-Mode|Key|Action
----|---|---
-Normal|`<Space>ff`|Find files.
-Normal|`<Space>fg`|Find grep (find text within files).
-Normal|`<Space>fb`|Find buffer.
-Normal|`<Space>fh`|Find help.
-Normal|`<Space>ft`|Find treesitter (vars, functions etc).
-Normal|`<Space>fa`|Find all (default treesitter window).
-
-### Terminal.
-
-Mode|Key|Action
----|---|---
-Normal|`<Space>4`|Open terminal.
-Terminal|`<Esc>`|Detach from terminal.
-
-### To-do.
-
-Write `TODO:` or `NOTE:` to make it searchable.
-
-Mode|Key|Action
----|---|---
-Normal|`<Space>3`|Open to-do list.
-
-### Trouble.
-
-Mode|Key|Action
----|---|---
-Normal|`<Space>2`|Open LSP trouble list.
-
-### Which key.
-
-Mode|Key|Action
----|---|---
-Normal|`<Space>0`|Show context hotkey help.
-
-### Window management.
-
-Mode|Key|Action
----|---|---
-Normal|`-`|Decrease split size vertically.
-Normal|`_`|Increase split size vertically.
-Normal|`\`|Decrease split size horizontally.
-Normal|`\|`|Increase split size horizontally.
-Normal|`<Space>=`|Equalize split sizes.
-
-# Bash commands.
-
-To get help with usage info run:
-
-```text
-$ help <COMMAND>
-
-or
-
-$ h <COMMAND>
-```
-
-## Android.
-
-Command|Description
----|---
-`emulator [NAME]`|Starts an Android emulator. Default name is "default".
-
-## Archive.
-
-Those are self-written scripts to create archives. They are basically compressed tar archives with SHA1 hashes in their names. They are exported so also available in `parallel` like this: `ls | parallel -j 8 -- archive {}`
-
-Command|Description
----|---
-`archive [DIRS]`|Create archive with the best compression (slow). If no args given, archives all files in current directory as separate archives.
-`archive_fast [FILES]`|Like normal `archive` but with minimal compression.
-`archive_check [ARCHIVES]`|Check specified archives or all archives in current directory.
-`archive_name [ARCHIVES] [NAME]`|Rename specified archive ro specified name or simplify name for specified archive or simplify names for all archives.
-`archive_prune [NAME]`|Delete old versions of an archive, or all archives by default.
-`unarchive [ARCHIVES]`|Check specified or all archives and extract if they are correct.
-
-## Autocomplete.
-
-Thos are functions that provide tab-completions.
-
-```bash
-_foo()
-{
-	_autocomplete "{foo,bar}"
-}
-complete -F _foo foo
-```
-
-Command|Description
----|---
-`_autocomplete <ARGS>`|Provide completion based on provided arguments separated by spaces.
-`_autocomplete_first <ARGS>`|Same as `_autocomplete` but works only once for first argument.
-`_autocomplete_grep <PATTERN>`|Ls autocomplete with specified grep filter.
-`_autocomplete_nested`|Provides nested completions, just like `sudo` does.
-
-## Battery.
-
-Command|Description
----|---
-`battery_level`|Print battery charge level (if available).
-
-## Bootstrap.
-
-Shortcuts to install different stuff.
-
-Command|Description
----|---
-`bootstrap_cargo`|Install cargo.
-`bootstrap_texlive`|Install TeXLive package.
-`bootstrap_grub`|Install grub theme. Requires root.
-`bootstrap_ffmpeg`|Install ffmpeg in flatpak to make `~/app/bin/ffmpeg` work.
-
-## Cd.
-
-Command|Description
----|---
-`cdd <DIR>`|Cd back to previous directory by name.
-
-## Checksum.
-
-Command|Description
----|---
-`checksum_create [FILES]`|Create checksums for files in current directory.
-`checksum_check [FILES]`|Check previously created checksums.
-
-## Chmod.
-
-Command|Description
----|---
-`x <FILE>`|Make file executable.
-
-## Color.
-
-### How to use.
-
-Most of the time you want to use it with `echo`. To make `echo` respect colors, you need to use `-e` flag like that:
-```bash
-export color_default="\033[0m"
-export color_red="\033[0;31m"
-echo -e "${color_red}hello world!${color_default}" # will print "hello world!" in red.
-```
-Don't forget to use `color_default` at the end, or your whole terminal will be red.
-
-### List of colors.
-
-Please note that colors depend on Terminal Emulator and may vary based on its settings.
-
-|Color|Code|
-|---|---|
-|default|`\033[0m`|
-|blue|`\033[0;34m`|
-|blue (bold)|`\033[1;34m`|
-|cyan|`\033[0;36m`|
-|cyan (bold)|`\033[1;36m`|
-|green|`\033[0;32m`|
-|green (bold)|`\033[1;32m`|
-|purple|`\033[0;35m`|
-|purple (bold)|`\033[1;35m`|
-|red|`\033[0;31m`|
-|red (bold)|`\033[1;31m`|
-|white|`\033[0;37m`|
-|white (bold)|`\033[1;37m`|
-|yellow|`\033[0;33m`|
-|yellow (bold)|`\033[1;33m`|
-
-## Copy/paste.
-
-Command|Description
----|---
-`echo a \| copy`|Copy `a` to system clipboard.
-`paste > file.txt`|Paste system clipboard to a file (or pipe).
-
-## File copy (cp).
-
-Command|Description
----|---
-`cp <FROM> <TO>`|Copy files or dirs. Actually, it is an alias for `rsync -ahP`. Multiple `<FROM>` could be specified.
-`cp_merge <FROM> <TO>`|Mirror directories. Same as `rsync --delete`.
-`cp_link <FROM> <TO>`|Copy directory by recursively creating hardlinks and directories.
-`cp_test <FROM> <TO>`|Test cp_merge without writing anything.
-`bcp <FROM> <TO>`|Default `cp` command.
-
-## Date.
-
-Command|Description
----|---
-`today`|Return today's date in `YYYYmmdd` format.
-`dow`|Return today's day of week, where 1 is Monday.
-
-## Dconf (gnome settings).
-
-Command|Description
----|---
-`dconf_load`|Load custom settings.
-`dconf_save`|Export all current setting in a file to inspect.
-
-## Disk.
-
-Command|Description
----|---
-`df`|Show free disk space (only physical media).
-`du [FILES]`|Show disk usage.
-
-## Docker.
-
-Command|Description
----|---
-`docker_volumes <CONTAINER>`|Show volumes of a specified container.
-`docker_health`|Show containers that exited with an error code.
-`docker_prune`|Heavy cleanup to free up space.
-`docker_ip <CONTAINER>`|Show IP of a specified container.
-`docker_update`|Update all Docker images.
-`dc`|Short for `docker compose`.
-`dcu [SERVICE]`|Start a compose service.
-`dcd [SERVICE]`|Remove a compose service.
-`dcp [SERVICE]`|Pull image for a compose service.
-`dcl [SERVICE]`|Show logs for a compose service.
-`dcr [SERVICE]`|Restart a compose service.
-`dcs [SERVICE]`|Stop a compose service.
-`dcdu [SERVICE]`|Recreate a compose service.
-`dcpu [SERVICE]`|Update and recreate a compose service.
-`dcul [SERVICE]`|Start a compose service and show its logs.
-
-## Environment variables.
-
-Variable|Description
----|---
-`PATH`|Defines where to find binaries. Modified to also include `$HOME/app/bin/` recursively.
-`LANGUAGE`|Specifies `UTF-8` as default.
-`EDITOR`|Specifies nvim as a default editor.
-`MANPAGER`|Specifies nvim as a default `man` viewer.
-`JAVA_HOME`|Specifies where JDK is stored.
-`ANDROID_SDK_ROOT`|Specifies where Android SDK is stored.
-`TEXMFVAR`, `TEXMFCONFIG`, `TEXMFLOCAL`|Specifies paths for TeXLive user directories.
-
-## Ffmpeg.
-
-Command|Description
----|---
-`ffmpeg_mux_audio <SOUND> <RESULT>`|Mux external audio into one container with video (replaces original audio). Run inside dir with original video. <SOUND> names should be the same for each video.
-`ffmpeg_mux_cover <FORMAT> <COVER>`|Mux image into files of specified format.
-`ffmpeg_music_meta <FORMAT>`|Detect and update music metadata.
-
-## File.
-
-Command|Description
----|---
-`o <FILE>`|Open file with the default GUI app.
-
-## Find.
-
-Command|Description
----|---
-`find_ext`|Find all file extensions recursively.
-`find_function`|Find all dotfiles functions.
-
-## Fix.
-
-Contains simple fixes for various issues.
-
-Command|Description
----|---
-`fix_ethernet_speed <SPEED>`|Specify ethernet speed if it failed to set correct speed automatically. [SPEED] can be 10/100/1000 etc.
-`fix_files_sftp`|Make Nautilus forget incorrect password for SFTP connection.
-
-## Git.
-
-Command|Description
----|---
-`gps`|Git push.
-`gpsf`|Git push --force.
-`gpl`|Git pull.
-`gl`|Git log.
-`gs`|Git status.
-`gst`|Git stash.
-`gd`|Git diff.
-`gdc <HASH>`|Git diff for a specific commit.
-`gc <MESSAGE>`|Git commit.
-`gch`|Git checkout.
-`gchb`|Git checkout branch.
-`gb`|Git branch.
-`gbd <BRANCH>`|Delete specified Git branch.
-`gbda`|Delete all local branches except the current one.
-`gf`|Git fetch --all.
-`gt`|Git tag.
-`gi`|Delete files updated in git ignore.
-`gpc <FILE>`|Git patch create.
-`gp <FILE>`|Git patch (apply).
-`ga`|Git add with preview.
-`gr [COUNT]`|Git rebase. 2 last commits by default. 0 means from root.
-`gu <EMAIL>`|Configure git user as Dmitry Voronin with specified email (project).
-`gg <REPO>`|Get git repo from my own git.
-`ggc`|Run git garbage collection.
-
-## Help.
-
-Command|Description
----|---
-`help <FUNCTION>`|Get help for a dotfile function.
-`h <FUNCTION>`|Same as `help`.
-
-## Ls.
-
-Command|Description
----|---
-`l`|List files in current dir.
-`ll`|List files by mtime.
-`lll [DEPTH] [DIRS]`|Show file tree.
-`llll`|List everything recursively.
-`la`|List all files.
-`lla`|List all files by mtime.
-
-## Name.
-
-Those are scripts to manipulate file names. They are all exported and available for `parallel`. If no [FILES] specified, it applies to all files inside current directory.
-
-Command|Description
----|---
-`name [FILES]`|Replace all non-alphanumeric characters in file with underscores.
-`name_hash [FILES]`|Replace all file names with hashes, keep extension.
-`name_hash_check [FILES]`|Check all file hashes.
-`name_series <SEASON> [FILES]`|Rename files to Jellyfin's show format: `Episode S01E01.mkv`.
-`name_manga <SEASON> [FILES]`|Rename files to Kavita's manga format: `Name Vol.1 Ch.01.cbr`.
-`name_ext <EXTENSION> [FILES]`|Change file extensions.
-`name_prefix <OLD> <NEW> [FILES]`|Change file prefix.
-`name_postfix <OLD> <NEW> [FILES]`|Change file postfix.
-`name_replace <OLD> <NEW> [FILES]`|Replace a part of file name.
-
-## Ncdu.
-
-Command|Description
----|---
-`ncdu [DIR]`|Show recursive disk usage. Only on the same filesystem.
-
-## Notify.
-
-Command|Description
----|---
-`notify <MESSAGE>`|Send notification.
-`notify_silent <MESSAGE>`|Send silent notification.
-
-## Own.
-
-Command|Description
----|---
-`own [USER] [FILE]`|Change ownership & permissions to specified user. Ownership changes only when root.
-
-## Pack.
-
-Command|Description
----|---
-`pack <TARGET.ext> [FILES]`|Create desired file format from other files.
-`unpack [FILES]`|Attempt to extract file content.
-
-## Parse.
-
-Command|Description
----|---
-`parse_simplify <STRING>`|Return simplified string: only alnum, underscores and dashes.
-`parse_camel <STRING>`|Return simplified CamelCase string.
-`parse_alnum <STRING>`|Return string containing only alphanumeric characters.
-
-## Permissions.
-
-Command|Description
----|---
-`perm`|Recursively change permissions not to share: 700 for dirs and 600 for files.
-`perm_share`|Recursively change permissions to share: 755 for dirs and 644 for files.
-
-## Ps.
-
-Command|Description
----|---
-`ps <PROGRAM>`|Show process info for matching [PROGRAM] name.
-
-## Recursive.
-
-Command|Description
----|---
-`recursive <COMMAND>`|Cd into every directory recursively and run specified command in each dir.
-`recursive1 <COMMAND>`|Cd into every directory in current directory and run specified command in each dir.
-
-## Rust.
-
-Command|Description
----|---
-`rust_book`|Open Rust book in a browser.
-
-## Shopt.
-
-Shopt|Description
----|---
-`dotglob`|When using `*` to match files, hidden files that start with a dot are also included.
-`globstar`|Allows the use of `**` for recursive search.
-`autocd`|Change directories without writing `cd`.
-
-## Su.
-
-Command|Description
----|---
-`s`|An alias for `su` cause I'm lazy.
-
-## Terminal.
-
-Command|Description
----|---
-`tsize`|Prints terminal size.
-
-## Tmp.
-
-Command|Description
----|---
-`tmp`|CD into host's primary tmp dir.
-
-## Tmux.
-
-Command|Description
----|---
-`ta [NAME]`|Attach to session by name. Default is `main`.
-`td`|Detach from session.
-`tl`|List all sessions.
-`trn [NAME]`|Rename session. Uses current dir name by default.
-`tn [NAME]`|Name window. Uses current dir name by default.
-`tk [NAME]`|Kill session. Default is `main`.
-`tka`|Kill all sessions.
-
-## To-do.
-
-Command|Description
----|---
-`todo`|Open editor for `~/.todo.md` file.
-
-## Toolbx.
-
-Command|Description
----|---
-`tb [NAME]`|Attach to box by name. Default is `main`.
-`tbk [NAME]`|Kill box by name. Default is `main`.
-`tb_rpmfusion [NAME]`|Install RPMFusion package to box by name. Default is `main`.
-`tbl`|List all boxes.
-
-## Transcode.
-`transcode <FORMAT> [FILES]`|Convert between different formats.
-
-## Try.
-
-Command|Description
----|---
-`try <COMMAND>`|Repeat the command every 2 seconds until it exits with success.
-
-## Umask.
-
-By default, umask is `077` which means group and others have no access when files are created.
-
-## Util.
-
-Short util functions.
-
-Command|Description
----|---
-`_core_count`|Get number of available CPU threads.
-
-## Vdl.
-
-Command|Description
----|---
-`vdl [LINK]`|Download a video/playlist. When no link provided, tries to update previously downloaded link.
-
-## Vi.
-
-Command|Description
----|---
-`vi`|Run vim.
-`v`|Run neovim.
-
-## Wallpaper.
-
-Command|Description
----|---
-`wallpaper <FILE>`|Set specified file as a wallpaper.
-
-## Watch.
-
-Command|Description
----|---
-`w <COMMAND>`|Alias for `watch`.
-`ww <COMMAND>`|Alias for `watch` that updates every 0.1 seconds.
-
-# To-do later.
-
-- [ ] Add tmux shortcuts to <C-t> combo, too.
diff --git a/.config/bash/module/android.sh b/.config/bash/module/android.sh
index 435f332..c41e80e 100644
--- a/.config/bash/module/android.sh
+++ b/.config/bash/module/android.sh
@@ -1,3 +1,10 @@
+# Start an Android emulator.
+# Default name is "default".
+# Usage: emulator [NAME]
 function emulator() {
-	${ANDROID_SDK_ROOT}/emulator/emulator -avd default &> /dev/null & disown
+	local name="${1}"
+	
+	[[ "${name}" = "" ]] && name="default"
+
+	${ANDROID_SDK_ROOT}/emulator/emulator -avd "${name}" &> /dev/null & disown
 }
diff --git a/.config/bash/module/archive.sh b/.config/bash/module/archive.sh
index 926a899..401609f 100644
--- a/.config/bash/module/archive.sh
+++ b/.config/bash/module/archive.sh
@@ -1,17 +1,14 @@
-export _ARCHIVE_PATTERN="_[0-9]{12}-[[:alnum:]]{40}.t[xg]z"
+export _archive_pattern="_[0-9]{12}-[[:alnum:]]{40}.t[xg]z"
 
-function _ARCHIVE_DATE() {
-	date +%Y%m%d%H%M
-}
-
-# archive file with maximum compression and checksum.
-# usage: archive [FILES]
+# Archive directories.
+# All directories by default.
+# Usage: archive [DIRS]
 function archive() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
 	local total=${#}
-	local date=$(_ARCHIVE_DATE)
+	local date=$(_archive_date)
 	local failed=0
 
 	# Set dafult value to target all directories.
@@ -51,14 +48,15 @@ function archive() {
 	fi
 }
 
-# archive file with minimal compression and checksum.
-# usage: archive_fast [FILES]
+# Archive directories with fast compression.
+# All directories by default.
+# Usage: archive_fast [DIRS]
 function archive_fast() {
 	local IFS=$'\n'
 	local targets=("${@}")
 	local count=0
 	local total=${#}
-	local date=$(_ARCHIVE_DATE)
+	local date=$(_archive_date)
 	local failed=0
 
 	# Set dafult value to target all directories.
@@ -98,8 +96,9 @@ function archive_fast() {
 	fi
 }
 
-# check archive hashes.
-# usage: archive_check [FILES]
+# Check archives integrity.
+# Checks all archives by default.
+# Usage: archive_check [FILES]
 function archive_check() {
 	local IFS=$'\n'
 	local targets=("${@}")
@@ -109,7 +108,7 @@ function archive_check() {
 
 	# set dafult value to target all supported archives.
 	if [[ "${targets}" = "" ]]; then
-		targets=($(ls | grep -E ${_ARCHIVE_PATTERN}))
+		targets=($(ls | grep -E ${_archive_pattern}))
 		total=${#targets[@]}
 	fi
 
@@ -143,6 +142,7 @@ function archive_check() {
 }
 
 # Delete old versions of an archives.
+# All archives by default.
 # Usage: archive_prune [NAME]
 function archive_prune() {
 	local IFS=$'\n'
@@ -153,7 +153,7 @@ function archive_prune() {
 
 	# All archives by default.
 	if [[ "${targets}" = "" ]]; then
-		targets=($(ls | grep -E ${_ARCHIVE_PATTERN}))
+		targets=($(ls | grep -E ${_archive_pattern}))
 		total=${#targets[@]}
 	fi
 
@@ -193,8 +193,8 @@ function archive_prune() {
 	fi
 }
 
-# extract previously created archive with checksum validation.
-# usage: unarchive [FILES]
+# Extract previously created archive with checksum validation.
+# Usage: unarchive [FILES]
 function unarchive() {
 	local IFS=$'\n'
 	local targets=("${@}")
@@ -204,7 +204,7 @@ function unarchive() {
 	
 	# set dafult value to target all supported archives.
 	if [[ "${targets}" = "" ]]; then
-		targets=($(ls | grep -E ${_ARCHIVE_PATTERN}))
+		targets=($(ls | grep -E ${_archive_pattern}))
 		total=${#targets[@]}
 	fi
 
@@ -259,8 +259,10 @@ function unarchive() {
 	fi
 }
 
-# rename archive. if no name specified, it simplifies archive's name.
-# usage: archive_name [ARCHIVE] [NAME]
+# Rename archives. 
+# If no name specified, it simplifies archive's name.
+# If no archives specified, apply to all archives.
+# Usage: archive_name [ARCHIVE] [NAME]
 function archive_name() {
 	local IFS=$'\n'
 	local targets="${1}"
@@ -271,7 +273,7 @@ function archive_name() {
 
 	# set dafult value to target all supported archives.
 	if [[ "${targets}" = "" ]]; then
-		targets=($(ls | grep -E ${_ARCHIVE_PATTERN}))
+		targets=($(ls | grep -E ${_archive_pattern}))
 		total=${#targets[@]}
 	fi
 
@@ -323,7 +325,7 @@ function archive_name() {
 	fi
 }
 
-# convert an old archive to a new format. TODO: remove me after some time when there won't be any old archives.
+# Convert old archives to a new format. TODO: remove me after some time when there won't be any old archives.
 function archive_convert() {
 	local IFS=$'\n'
 	local old_format="_[[:alnum:]]{40}.tar.[xg]z"
@@ -366,6 +368,8 @@ function archive_convert() {
 	done
 }
 
+# Parse archive file name to get: name, date, hash and format.
+# Usage: _archive_parse <FILENAME>
 function _archive_parse() {
 	local input="${1}"
 	local name="${input%_*}"
@@ -380,6 +384,8 @@ function _archive_parse() {
 	echo "${format}"
 }
 
+# Autocomplete for archive_name function.
+# First arg is the archives list, second one is selected archive's current name.
 function _archive_name() {
 	local IFS=$'\n'
 	COMPREPLY=()
@@ -389,7 +395,7 @@ function _archive_name() {
 	local command="${COMP_WORDS[0]}"
 
 	if [[ "${prev}" = "${command}" ]]; then
-		COMPREPLY=( $(compgen -W "$(ls | grep -E ${_ARCHIVE_PATTERN})" -- ${cur}) )
+		COMPREPLY=( $(compgen -W "$(ls | grep -E ${_archive_pattern})" -- ${cur}) )
 		return 0
 	else
 		local name="${prev%_*}"
@@ -398,8 +404,14 @@ function _archive_name() {
 	fi
 }
 
+# Autocomplete with archives in current dir.
 function _archive_grep() {
-	_autocomplete_grep ${_ARCHIVE_PATTERN}
+	_autocomplete_grep ${_archive_pattern}
+}
+
+# Get date for a new archive.
+function _archive_date() {
+	date +%Y%m%d%H%M
 }
 
 complete -o filenames -F _archive_grep archive_check unarchive
diff --git a/.config/bash/module/autocomplete.sh b/.config/bash/module/autocomplete.sh
index 47b7f85..dee9dfe 100644
--- a/.config/bash/module/autocomplete.sh
+++ b/.config/bash/module/autocomplete.sh
@@ -1,6 +1,6 @@
-# bash autocomplete.
-# usage: _foo() { _autocomplete "{foo,bar}" } ; complete -F _foo foo
-# there are also options like -o nospace. see man for more info.
+# Bash autocomplete.
+# There are also options like -o nospace. see man for more info.
+# Usage: _foo() { _autocomplete "{foo,bar}" } ; complete -F _foo foo
 function _autocomplete() {
 	local IFS=$'\n'
 	local commands="${*}"
@@ -15,7 +15,7 @@ function _autocomplete() {
 	return 0
 }
 
-# autocomplete only first argument.
+# Autocomplete only first argument.
 function _autocomplete_first() {
 	local IFS=$'\n'
 	local commands="${*}"
@@ -46,7 +46,7 @@ function _autocomplete_grep() {
 	return 0
 }
 
-# autocomplete nested program.
+# Autocomplete nested program.
 function _autocomplete_nested() {
 	# local IFS=$'\n'
 	local cur prev words cword split i
diff --git a/.config/bash/module/battery.sh b/.config/bash/module/battery.sh
index ebccd30..5c836c8 100644
--- a/.config/bash/module/battery.sh
+++ b/.config/bash/module/battery.sh
@@ -1,4 +1,4 @@
-# check battery level.
+# Print current battery level.
 function battery_level() {
 	cat /sys/class/power_supply/BAT*/capacity
 }
diff --git a/.config/bash/module/bootstrap.sh b/.config/bash/module/bootstrap.sh
index 721a1f2..3663bd5 100644
--- a/.config/bash/module/bootstrap.sh
+++ b/.config/bash/module/bootstrap.sh
@@ -1,10 +1,10 @@
-# install Cargo/Rust.
+# Install Cargo/Rust.
 function bootstrap_rust() {
 	curl https://sh.rustup.rs -sSf | sh 
 	rustup component add rust-analyzer
 }
 
-# install TeXLive.
+# Install TeXLive.
 function bootstrap_texlive() {
 	cd /tmp
 	wget https://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz
@@ -14,14 +14,14 @@ function bootstrap_texlive() {
 	./install-tl
 }
 
-# install grub theme.
+# Install grub theme.
 function bootstrap_grub() {
 	wget -O- https://github.com/shvchk/fallout-grub-theme/raw/master/install.sh | bash
 	echo 'GRUB_HIDDEN_TIMEOUT=' >> /etc/default/grub
 	grub2-mkconfig -o /etc/grub2.cfg
 }
 
-# install ffmpeg.
+# Install ffmpeg.
 function bootstrap_ffmpeg() {
 	flatpak install org.kde.kdenlive
 }
diff --git a/.config/bash/module/cd.sh b/.config/bash/module/cd.sh
index 63b8fab..db32765 100644
--- a/.config/bash/module/cd.sh
+++ b/.config/bash/module/cd.sh
@@ -1,4 +1,5 @@
 # CD (back) to directory.
+# Finds first directory that matches the input (case-insensitive).
 # Usage: cdd <DIR>
 function cdd() {
 	local target="${1}"
diff --git a/.config/bash/module/checksum.sh b/.config/bash/module/checksum.sh
index 00054a7..fd07803 100644
--- a/.config/bash/module/checksum.sh
+++ b/.config/bash/module/checksum.sh
@@ -1,4 +1,6 @@
 # Save file checksums.
+# For file with a name "file" it will create a new file called ".file.sha1" with hash in it.
+# All files by default.
 # Usage: checksum_create [FILES]
 function checksum_create() {
 	local IFS=$'\n'
@@ -46,6 +48,8 @@ function checksum_create() {
 }
 
 # Check stored values against actual files.
+# All files by default.
+# Usage: checksum_check [FILES]
 function checksum_check() {
 	local IFS=$'\n'
 	local targets=("${@}")
@@ -95,16 +99,21 @@ function checksum_check() {
 	fi
 }
 
+# Calculate hashes for all files recursively and store in a file called "checksum.sha1".
 function checksum() {
 	find -type f | parallel -j $(_core_count) -- sha1sum {} >> checksum.sha1
 }
 
+# Create checksum for a file.
+# Usage: _checksum_create <FILE>
 function _checksum_create() {
 	local path="${1%/*}"
 	local name="${1##*/}"
 	sha1sum "${path}/${name}" > "${path}/.${name}.sha1"
 }
 
+# Check checksum for a file.
+# Usage: _checksum_check <FILE>
 function _checksum_check() {
 	local file="${1##*\ \ }"
 	local stored="${1%%\ \ *}"
diff --git a/.config/bash/module/chmod.sh b/.config/bash/module/chmod.sh
index 85b5b9b..1580af6 100644
--- a/.config/bash/module/chmod.sh
+++ b/.config/bash/module/chmod.sh
@@ -1,4 +1,5 @@
-# add executable flag to file.
+# Add executable flag to file.
+# Usage: x <FILES>
 function x() {
-	chmod +x "${@}"
+	chmod +x -- "${@}"
 }
diff --git a/.config/bash/module/color.sh b/.config/bash/module/color.sh
index f83c0b3..4596d82 100644
--- a/.config/bash/module/color.sh
+++ b/.config/bash/module/color.sh
@@ -1,6 +1,6 @@
-# collection of available CLI colors.
-# they may differ depending on the terminal used.
-# colors with 'b' prefix are bold colors.
+# Collection of available CLI colors.
+# They may differ depending on the terminal used.
+# Colors with 'b' prefix are bold colors.
 
 export color_default="\033[0m"
 export color_blue="\033[0;34m"
@@ -18,7 +18,7 @@ export color_bwhite="\033[1;37m"
 export color_yellow="\033[0;33m"
 export color_byellow="\033[1;33m"
 
-# print all available colors with their names colored in corresponding color.
+# Print all available colors with their names colored in corresponding color.
 function color_test() {
 	echo -e "${color_default}color_default\n${color_blue}color_blue\n${color_bblue}color_bblue\n${color_cyan}color_cyan\n${color_bcyan}color_bcyan\n${color_green}color_green\n${color_bgreen}color_bgreen\n${color_purple}color_purple\n${color_bpurple}color_bpurple\n${color_red}color_red\n${color_bred}color_bred\n${color_white}color_white\n${color_bwhite}color_bwhite\n${color_yellow}color_yellow\n${color_byellow}color_byellow"
 }
diff --git a/.config/bash/module/copypaste.sh b/.config/bash/module/copypaste.sh
index 7b9b1a7..09d03b5 100644
--- a/.config/bash/module/copypaste.sh
+++ b/.config/bash/module/copypaste.sh
@@ -1,2 +1,9 @@
-alias copy="wl-copy"   # copy stdin to system clipboard.
-alias paste="wl-paste" # paste system clipboard to stdout.
+# Copy stdin to system clipboard. Example: echo hi | copy
+function copy() {
+	wl-copy
+}
+
+# Paste system clipboard to stdout. Example: paste > file.txt
+function paste() {
+	wl-paste
+}
diff --git a/.config/bash/module/cp.sh b/.config/bash/module/cp.sh
index 25a17b1..d31435f 100644
--- a/.config/bash/module/cp.sh
+++ b/.config/bash/module/cp.sh
@@ -1,24 +1,30 @@
-# replace default cp with rsync.
+# Replaces default cp with rsync.
+# Usage: cp <FROM> <TO>
 function cp() {
 	rsync -ahP --chmod=u+w -- "${@}"
 }
 
-# copy and also merge all changes (delete dst files that do not exist in src).
+# Copy and also merge all changes (delete dst files that do not exist in src).
+# Usage: cp_merge <FROM> <TO>
 function cp_merge() {
 	rsync -ahP --chmod=u+w --delete -- "${@}"
 }
 
-# copy by creating hardlinks.
+# Copy by creating hardlinks.
+# Works for directories, too.
+# Usage: cp_link <FROM> <TO>
 function cp_link() {
 	/usr/bin/cp -lr -- "${@}"
 }
 
-# default cp, a.k.a builtin cp.
+# Default cp, a.k.a builtin cp.
+# When you don't need rsync.
 function bcp() {
 	/usr/bin/cp "${@}"
 }
 
-# cp_merge without writing anything.
+# Print output of cp_merge without writing anything.
+# Usage: cp_test <FROM> <TO>
 function cp_test() {
 	rsync -ahP --chmod=u+w --delete -n -- "${@}"
 }
diff --git a/.config/bash/module/date.sh b/.config/bash/module/date.sh
index 7bf68c8..45ff32f 100644
--- a/.config/bash/module/date.sh
+++ b/.config/bash/module/date.sh
@@ -1,9 +1,9 @@
-# print today date in yyyyMMdd format.
+# Print today date in yyyyMMdd format.
 function today() {
 	date +%Y%m%d
 }
 
-# current day of week number.
+# Current day of week number.
 function dow() {
 	date +%u
 }
diff --git a/.config/bash/module/dconf.sh b/.config/bash/module/dconf.sh
index 947d21a..0e7ffc9 100644
--- a/.config/bash/module/dconf.sh
+++ b/.config/bash/module/dconf.sh
@@ -1,9 +1,16 @@
-export _GDCONF_PATH="${HOME}/.config/linux/gnome.dconf"
+export _gdconf_path="${HOME}/.config/linux/gnome.dconf"
 
+# Load Gnome settings.
 function dconf_load() {
-	sed -i -e s/voronind/$(whoami)/g ${_GDCONF_PATH} ; dconf load / < ${_GDCONF_PATH}
+	sed -i -e s/voronind/$(whoami)/g ${_gdconf_path} ; dconf load / < ${_gdconf_path}
 }
 
+# Dump Gnome settings into the file.
+# Default name is gnome.dconf.
+# Do this before changing settings and after, an then run diff to find out what to add to main gnome.dconf.
+# Usage: dconf_save [FILE]
 function dconf_save() {
-	dconf dump / > gnome.dconf
+	local name="${1}"
+	[[ "${name}" = "" ]] && name="gnome.dconf"
+	dconf dump / > "${name}"
 }
diff --git a/.config/bash/module/disk.sh b/.config/bash/module/disk.sh
index dd108e7..d6a2dd9 100644
--- a/.config/bash/module/disk.sh
+++ b/.config/bash/module/disk.sh
@@ -1,9 +1,11 @@
-# show only physical drive sizes.
+# Show only physical drives info.
 function df() {
-	df --si | sed -e '1p' -e "/^\/dev\//!d"
+	/usr/bin/df --si | sed -e '1p' -e "/^\/dev\//!d"
 }
 
-# show combined size in SI.
+# Show combined size in SI.
+# Current dir by default.
+# Usage: du [DIRS]
 function du() {
-	du -sh --si -- "${@}"
+	/usr/bin/du -sh --si -- "${@}"
 }
diff --git a/.config/bash/module/doc.sh b/.config/bash/module/doc.sh
new file mode 100644
index 0000000..ff07c86
--- /dev/null
+++ b/.config/bash/module/doc.sh
@@ -0,0 +1,42 @@
+# Generate a markdown file with all the help info.
+# Outputs to ~/.doc/bash.md
+function doc_bash() {
+	local IFS=$'\n'
+	local file="${HOME}/.doc/bash.md"
+
+	# Print title.
+	echo "# Bash reference file." > "${file}"
+	echo >> "${file}"
+
+	# Print help info.
+	echo "To get help with usage info run:" >> "${file}"
+	echo >> "${file}"
+	echo '```text' >> "${file}"
+	echo '$ help <COMMAND>' >> "${file}"
+	echo >> "${file}"
+	echo "or" >> "${file}"
+	echo >> "${file}"
+	echo '$ h <COMMAND>' >> "${file}"
+	echo '```' >> "${file}"
+	echo >> "${file}"
+
+	# Print table title.
+	echo "Command|Description" >> "${file}"
+	echo "---|---" >> "${file}"
+
+	# Fill with data.
+	for fun in $(find_functions | sort); do
+		# Skip private functions.
+		[[ "${fun}" =~ ^_.* ]] && continue
+
+		# Parse help info.
+		local desc="$(help ${fun} | grep -v Usage\: | tr '\n' ' ')"
+		local usage="$(help ${fun} | grep Usage\: | sed -e s\/Usage\:\ \/\/)"
+
+		# Use function name if no usage info available.
+		[[ "${usage}" = "" ]] && usage="${fun}"
+
+		# Write to file.
+		[[ "${desc}" != "" ]] && echo "${usage}|${desc}" >> "${file}"
+	done
+}
diff --git a/.config/bash/module/docker.sh b/.config/bash/module/docker.sh
index 9d0b41d..5544c22 100644
--- a/.config/bash/module/docker.sh
+++ b/.config/bash/module/docker.sh
@@ -1,4 +1,5 @@
-# show container's volumes.
+# Show container's volumes.
+# Usage: docker_volumes <CONTAINER>
 function docker_volumes() {
 	docker inspect -f '{{ .Mounts }}' "${@}"
 }
@@ -8,43 +9,48 @@ function docker_health() {
 	docker ps -a | grep Exited
 }
 
-# prune everything.
+# Prune everything.
 function docker_prune() {
 	docker system prune --volumes --all
 }
 
 # Docker compose shortcut.
-# Usage: dc [SERVICE]
 function dc() {
 	docker compose "${@}"
 }
 
 # Docker compose up.
+# Usage: dcu [SERVICES]
 function dcu() {
 	docker compose up -d "${@}"
 }
 
 # Docker compose down.
+# Usage: dcd [SERVICES]
 function dcd() {
 	docker compose down "${@}"
 }
 
 # Docker compose pull.
+# Usage: dcp [SERVICES]
 function dcp() {
 	docker compose pull "${@}"
 }
 
 # Docker compose logs.
+# Usage: dcl [SERVICES]
 function dcl() {
 	docker compose logs -f "${@}"
 }
 
 # Docker compose restart.
+# Usage: dcr [SERVICES]
 function dcr() {
 	docker compose restart "${@}"
 }
 
 # Docker compose stop.
+# Usage: dcs [SERVICES]
 function dcs() {
 	docker compose stop "${@}"
 }
@@ -70,7 +76,7 @@ function dcul() {
 }
 
 # Find out container's IP address.
-# Usage: docker_up <CONTAINER NAME>
+# Usage: docker_up <CONTAINER>
 function docker_ip() {
 	docker inspect -f '\''{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}'\' "${1}" | sed "s/^.//" | sed "s/.$//"
 }
@@ -80,10 +86,12 @@ function docker_update() {
 	docker images --format "{{.Repository}}:{{.Tag}}" | xargs -L1 docker pull
 }
 
+# Autocomplete with available services.
 function _dc_services() {
 	_autocomplete "$(docker compose config --services 2> /dev/null)"
 }
 
+# Autocomplete with available container names.
 function _dc_containers() {
 	_autocomplete "$(docker ps --format "\""{{.Names}}"\"")"
 }
diff --git a/.config/bash/module/export.sh b/.config/bash/module/export.sh
index 2d18926..2e9b0f7 100644
--- a/.config/bash/module/export.sh
+++ b/.config/bash/module/export.sh
@@ -25,4 +25,4 @@ export TEXMFCONFIG="$HOME/app/tex/data/config"
 export TEXMFLOCAL="$HOME/app/tex/data/local"
 
 # Dotfiles exports.
-export DOTFILES_PATH="${HOME}/.config/bash/module"
+export BASH_MODULE_PATH="${HOME}/.config/bash/module"
diff --git a/.config/bash/module/ffmpeg.sh b/.config/bash/module/ffmpeg.sh
index a035680..17455c2 100644
--- a/.config/bash/module/ffmpeg.sh
+++ b/.config/bash/module/ffmpeg.sh
@@ -1,8 +1,8 @@
-# mux audio into containers. file names in sound and current dirrectories must match. tmp usage for anime downloads.
-# usage: ffmpeg_mux_audio <SOUND> <OUTPUT DIR>
+# Mux audio into containers. File names in sound and current dirrectories must match. Tmp usage for anime downloads.
+# Usage: ffmpeg_mux_audio <SOUND> <OUTPUT DIR>
 function ffmpeg_mux_audio() {
-	if [[ "$1" = "" ]]; then
-		echo "usage: ffmpeg_mux_audio <SOUND> <OUTPUT DIR>"
+	if [[ "${1}" = "" ]]; then
+		help ffmpeg_mux_audio
 		return 2
 	fi
 
@@ -13,7 +13,7 @@ function ffmpeg_mux_audio() {
 # Usage: ffmpeg_mux_cover <FORMAT> <COVER>
 function ffmpeg_mux_cover() {
 	if [[ "${1}" = "" ]]; then
-		echo "Usage: ffmpeg_mux_cover <FORMAT> <COVER>"
+		help ffmpeg_mux_cover
 		return 2
 	fi
 
@@ -39,11 +39,14 @@ function ffmpeg_mux_cover() {
 	rm -d out/ && rm "${2}"
 }
 
-# Change music metadata.
+# Generate music metadata from directory structure.
+# Top dir is the Artist name like this: The_Beatles.
+# Next are albums like this: 2010_My_love.
+# Inside are songs like this: 01_sample.flac.
 # Usage: ffmpeg_music_meta <FORMAT>
 function ffmpeg_music_meta() {
 	if [[ "${1}" = "" ]]; then
-		echo "Usage: ffmpeg_music_meta <FORMAT>"
+		help ffmpeg_music_meta
 		return 2
 	fi
 
@@ -71,17 +74,20 @@ function ffmpeg_music_meta() {
 	rm -d out/
 }
 
+# Get video FPS.
 function _ffprobe_fps() {
 	local fps=$(ffprobe -v 0 -of csv=p=0 -select_streams v:0 -show_entries stream=r_frame_rate "${1}")
 	fps="${fps%%/*}"
 	echo "${fps}"
 }
 
+# Get recommended keyframe interval for a file.
 _ffprobe_keyint() {
 	local fps=$(_ffprobe_fps "${1}")
 	echo $((fps*5))
 }
 
+# Get audio bitrage. 128 by default.
 function _ffprobe_ba() {
 	local ba=$(ffprobe -v error -select_streams a:0 -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 "${1}")
 	[[ "${ba}" != "N/A" ]] && echo $((ba/1024)) || echo 128
diff --git a/.config/bash/module/find.sh b/.config/bash/module/find.sh
index 2c20125..0805308 100644
--- a/.config/bash/module/find.sh
+++ b/.config/bash/module/find.sh
@@ -6,5 +6,5 @@ function find_ext() {
 
 # Find all module functions.
 function find_functions() {
-	cat "${DOTFILES_PATH}"/* | grep "^function.*()" | sed -e "s/^function //" -e "s/().*//"
+	cat "${BASH_MODULE_PATH}"/* | grep "^function.*()" | sed -e "s/^function //" -e "s/().*//"
 }
diff --git a/.config/bash/module/fix.sh b/.config/bash/module/fix.sh
index 0e1bfb5..7f7dbda 100644
--- a/.config/bash/module/fix.sh
+++ b/.config/bash/module/fix.sh
@@ -1,20 +1,19 @@
-# fix when ethernet mistakenly detects 100 Mb instead of 1000 Mb.
-# usage: fix_ethernet_speed <DEVICE> <SPEED>
+# Fix when ethernet mistakenly detects 100 Mb instead of 1000 Mb.
 # SPEED is one of 10/100/1000 etc.
+# Usage: fix_ethernet_speed <DEVICE> <SPEED>
 function fix_ethernet_speed() {
 	local device="${1}"
 	local speed="${2}"
 
 	if [[ "${device}" = "" || "${speed}" = "" ]]; then
-		echo "usage: fix_ethernet_speed <DEVICE> <SPEED>"
+		help fix_ethernet_speed
 		return 2
 	fi
 
 	ethtool -s "${device}" speed "${speed}"
 }
 
-# fix files wrong sftp password.
-# alias fix_files_sftp="secret-tool clear protocol sftp server 192.168.1.2"
+# Fix nautilus after typing wrong sftp password.
 function fix_files_sftp() {
 	secret-tool clear protocol sftp
 }
diff --git a/.config/bash/module/git.sh b/.config/bash/module/git.sh
index a4d3b31..67c9c5b 100644
--- a/.config/bash/module/git.sh
+++ b/.config/bash/module/git.sh
@@ -44,6 +44,7 @@ function gch() {
 }
 
 # Git checkout branch.
+# Usage: gchb <BRANCH>
 function gchb() {
 	git checkout -b "${@}"
 }
@@ -54,6 +55,7 @@ function gb() {
 }
 
 # Git branch delete.
+# Usage: gbd <BRANCH>
 function gbd() {
 	git branch -D "${@}"
 }
@@ -95,7 +97,7 @@ function ggc() {
 	git gc --aggressive --no-cruft --prune=now
 }
 
-# Preview diff while adding. adds current dir by default.
+# Preview diff while adding. Adds current dir by default.
 # Usage: ga [FILES]
 function ga() {
 	local target=${@}
@@ -108,8 +110,8 @@ function ga() {
 	git add ${target}
 }
 
-# rebase by X commits or from root. when COUNT is 0 - rebase from root. default is 2.
-# usage: gr [COMMIT COUNT]
+# Rebase by X commits or from root. When COUNT is 0 - rebase from root. Default is 2.
+# Usage: gr [COMMIT COUNT]
 function gr() {
 	local base="${1}"
 
@@ -126,8 +128,8 @@ function gr() {
 	fi
 }
 
-# specify git user as Dmitry Voronin with provided email.
-# usage: gu [EMAIL]
+# Specify git user as Dmitry Voronin with provided email.
+# Usage: gu [EMAIL]
 function gu() {
 	local name="Dmitry Voronin"
 	local email="${1}"
@@ -144,7 +146,14 @@ function gu() {
 # Get my git repo.
 # Usage: gg <REPO>
 function gg() {
-	git clone https://git.voronind.com/voronind/"${1}"
+	local repo="${1}"
+
+	if [[ "${repo}" = "" ]]; then
+		help gg
+		return 2
+	fi
+
+	git clone https://git.voronind.com/voronind/"${repo}"
 }
 
 # See diff for a specific commit.
@@ -206,6 +215,7 @@ __git_complete gt _git_tag &> /dev/null
 __git_complete gp _git_apply &> /dev/null
 __git_complete ga _git_add &> /dev/null
 
+# Autocomplete with my git emails.
 function _gu() {
 	_autocomplete_first account@voronind.com dd.voronin@fsight.ru
 }
diff --git a/.config/bash/module/help.sh b/.config/bash/module/help.sh
index 9fbb0f7..1bc5ef7 100644
--- a/.config/bash/module/help.sh
+++ b/.config/bash/module/help.sh
@@ -1,20 +1,23 @@
-# Get help about bash function.
+# Get help about dotfiles bash function.
+# Usage: help <FUNCTION>
 function help() {
 	local fun="${1}"
 
-	if [[ $(find_functions | grep "${fun}") = "" ]]; then
-		echo "Function not found."
-		return 1
+	if [[ "${fun}" = "" ]] || [[ "$(find_functions | grep ${fun})" = "" ]]; then
+		help help
+		return 2
 	fi
 
-	sed -e '$s/$/\n/' -s "${DOTFILES_PATH}"/* | sed -n -e "/function ${fun}()/q;p" | tac | sed -n -e "/^$/q;p" | tac | sed -e "s/^# \+//"
+	sed -e '$s/$/\n/' -s "${BASH_MODULE_PATH}"/* | sed -n -e "/function ${fun}()/q;p" | tac | sed -n -e "/^$/q;p" | tac | sed -e "s/^# \+//"
 }
 
 # Short for help.
+# Usage: h <FUNCTION>
 function h() {
 	help "${@}"
 }
 
+# Autocomplete with available functions.
 function _help_functions() {
 	_autocomplete_first $(find_functions)
 }
diff --git a/.config/bash/module/ls.sh b/.config/bash/module/ls.sh
index 92361e6..cd68cb9 100644
--- a/.config/bash/module/ls.sh
+++ b/.config/bash/module/ls.sh
@@ -1,19 +1,25 @@
-# unset possible system-defined aliases.
+# Unset possible system-defined aliases.
 unalias l ll lll llll la lla &> /dev/null
 unset l ll lll llll la lla &> /dev/null
 
-# list files in dir.
+# List files in dirs.
+# Current dir by default.
+# Usage: l [DIRS]
 function l() {
-	ls -lhv --si --group-directories-first "$@"
+	ls -lhv --si --group-directories-first -- "$@"
 }
 
-# list last modified files first.
+# List last modified files first.
+# Current dir by default.
+# Usage: ll [DIRS]
 function ll() {
-	ls -lhvtr --si "$@"
+	ls -lhvtr --si -- "$@"
 }
 
-# list files in tree structure.
-# usage: lll [DEPTH] [DIRS]
+# List files in tree structure.
+# Current dir by default.
+# Depth can be omitted by passing - (dash).
+# Usage: lll [DEPTH] [DIRS]
 function lll() {
 	local IFS=$'\n'
 	local depth="${1}"
@@ -26,17 +32,23 @@ function lll() {
 	tree -a -L "${depth}" -- "${target[@]}"
 }
 
-# list files recursively.
+# List files recursively.
+# Current dir by default.
+# Usage: llll [DIRS]
 function llll() {
-	ls -RlAhv --si --group-directories-first "$@"
+	ls -RlAhv --si --group-directories-first -- "$@"
 }
 
-# list all files in dir, incl. hidden files.
+# List all files in dirs, incl. hidden files.
+# Current dir by default.
+# Usage: la [DIRS]
 function la() {
-	ls -lAh --si --group-directories-first "$@"
+	ls -lAh --si --group-directories-first -- "$@"
 }
 
-# list all files in dir, incl. hidden files, sorted by mtime.
+# List all files in dirs, incl. hidden files, sorted by mtime.
+# Current dir by default.
+# Usage: lla [DIRS]
 function lla() {
-	ls -lAhtr --si "$@"
+	ls -lAhtr --si -- "$@"
 }
diff --git a/.config/bash/module/name.sh b/.config/bash/module/name.sh
index c2fd94f..b60260d 100644
--- a/.config/bash/module/name.sh
+++ b/.config/bash/module/name.sh
@@ -1,5 +1,6 @@
-# rename files to strip all special characters.
-# usage: name [FILES]
+# Rename files to strip all special characters.
+# All files by default.
+# Usage: name [FILES]
 function name() {
 	local IFS=$'\n'
 	local targets=("${@}")
@@ -62,8 +63,9 @@ function name() {
 	fi
 }
 
-# rename all files to their hashes while keeping extensions.
-# usage: name_hash [FILES]
+# Rename all files to their hashes while keeping extensions.
+# All files by default.
+# Usage: name_hash [FILES]
 function name_hash() {
 	local IFS=$'\n'
 	local targets=("${@}")
@@ -122,13 +124,14 @@ function name_hash() {
 	fi
 }
 
-# check hashes for renamed files.
-# usage: name_hash_check [FILES]
+# Check hashes for previously renamed files.
+# All files by default.
+# Usage: name_hash_check [FILES]
 function name_hash_check() {
 	local IFS=$'\n'
-	local targets=("${@}") # target file(s).
-	local total=${#}			 # total to process.
-	local count=0					# processed counter.
+	local targets=("${@}")
+	local total=${#}
+	local count=0
 	local failed=0
 
 	# all targets by default.
@@ -164,8 +167,9 @@ function name_hash_check() {
 	fi
 }
 
-# rename files for Jellyfin series, i.e. Episode S01E01.mkv
-# usage: name_series <SEASON> [FILES]
+# Rename files for Jellyfin series, i.e. Episode S01E01.mkv
+# All files by default.
+# Usage: name_series <SEASON> [FILES]
 function name_series() {
 	local IFS=$'\n'
 	local season="${1}"
@@ -218,8 +222,9 @@ function name_series() {
 	fi
 }
 
-# rename files for Kavita manga format.
-# usage: name_manga <SEASON> [FILES]
+# Rename files for Kavita manga format.
+# All files by default.
+# Usage: name_manga <SEASON> [FILES]
 function name_manga() {
 	local IFS=$'\n'
 	local season="${1}"
@@ -273,8 +278,9 @@ function name_manga() {
 	fi
 }
 
-# rename files for new extension.
-# usage: name_ext <EXTENSION> [FILES]
+# Rename files with new extension.
+# All files by default.
+# Usage: name_ext <EXTENSION> [FILES]
 function name_ext() {
 	local IFS=$'\n'
 	local extension="${1}"
@@ -325,7 +331,8 @@ function name_ext() {
 	fi
 }
 
-# Change file prefixes.
+# Change file name prefix.
+# All matching files by default.
 # Usage: name_prefix <OLD> <NEW> [FILES]
 function name_prefix() {
 	local IFS=$'\n'
@@ -336,7 +343,7 @@ function name_prefix() {
 	local total=$((${#}-2))
 	local failed=0
 
-	# All targets by default.
+	# All matching targets by default.
 	if [[ "${targets}" = "" ]]; then
 		targets=(${old}*)
 		total=${#targets[@]}
@@ -372,7 +379,8 @@ function name_prefix() {
 	fi
 }
 
-# Change file postfix.
+# Change file name postfix.
+# All matching files by default.
 # Usage: name_postfix <OLD> <NEW> [FILES]
 function name_postfix() {
 	local IFS=$'\n'
@@ -383,7 +391,7 @@ function name_postfix() {
 	local total=$((${#}-2))
 	local failed=0
 
-	# All targets by default.
+	# All matching targets by default.
 	if [[ "${targets}" = "" ]]; then
 		targets=(*${old})
 		total=${#targets[@]}
@@ -420,6 +428,8 @@ function name_postfix() {
 }
 
 # Replace part of the name.
+# All matching files by default.
+# Usage: name_replace <OLD> <NEW> [FILES]
 function name_replace() {
 	local IFS=$'\n'
 	local old="${1}"
@@ -429,7 +439,7 @@ function name_replace() {
 	local total=$((${#}-2))
 	local failed=0
 
-	# All targets by default.
+	# All matching targets by default.
 	if [[ "${targets}" = "" ]]; then
 		targets=(*${old}*)
 		total=${#targets[@]}
diff --git a/.config/bash/module/ncdu.sh b/.config/bash/module/ncdu.sh
index e2c3289..61940ff 100644
--- a/.config/bash/module/ncdu.sh
+++ b/.config/bash/module/ncdu.sh
@@ -1,4 +1,6 @@
-# search only on current filesystem.
+# Search only on current filesystem.
+# Current dir by default.
+# Usage: ncdu [DIRS]
 function ncdu() {
-	ncdu -x -- "${@}"
+	/usr/bin/ncdu -x -- "${@}"
 }
diff --git a/.config/bash/module/notify.sh b/.config/bash/module/notify.sh
index 7e14967..ca2ab44 100644
--- a/.config/bash/module/notify.sh
+++ b/.config/bash/module/notify.sh
@@ -1,9 +1,11 @@
-# send Telegram notification.
+# Send Telegram notification.
+# Usage: notify <MESSAGE>
 function notify() {
 	curl -X POST -H 'Content-Type: Application/json' -d "{\"chat_id\":\"155897358\",\"text\":\"$1\"}" https://api.telegram.org/bot2046849441:AAHQpjRK4xpL8tEUyN4JTSDUUze4J0wSIy4/sendMessage &> /dev/null
 }
 
-# send silent Telegram notification.
+# Send silent Telegram notification.
+# Usage: notify_silent <MESSAGE>
 function notify_silent() {
 	curl -X POST -H 'Content-Type: Application/json' -d "{\"chat_id\":\"155897358\",\"text\":\"$1\",\"disable_notification\":\"true\"}" https://api.telegram.org/bot2046849441:AAHQpjRK4xpL8tEUyN4JTSDUUze4J0wSIy4/sendMessage &> /dev/null
 }
diff --git a/.config/bash/module/own.sh b/.config/bash/module/own.sh
index 0a427f2..903e27b 100644
--- a/.config/bash/module/own.sh
+++ b/.config/bash/module/own.sh
@@ -1,5 +1,6 @@
-# change file ownership to specified user id and restrict access to him.
-# usage: own [USER] [FILES]
+# Change file ownership to specified user id and restrict access to him.
+# Root user by default. This directory recursively by default.
+# Usage: own [USER] [FILES]
 function own() {
 	local file="${2}"
 	local user="${1}"
diff --git a/.config/bash/module/pack.sh b/.config/bash/module/pack.sh
index 8f33e00..f31d05f 100644
--- a/.config/bash/module/pack.sh
+++ b/.config/bash/module/pack.sh
@@ -1,6 +1,7 @@
-export _UNPACK_SUPPORTED=".tar$|.tgz$|.txz$|.tar.gz$|.tar.xz$|.zip$|.iso$|.rar$"
+export _unpack_supported=".tar$|.tgz$|.txz$|.tar.gz$|.tar.xz$|.zip$|.iso$|.rar$"
 
 # Pack files into desired format.
+# All files and directories by default.
 # Usage: pack <TARGET.ext> [FILES]
 function pack() {
 	local IFS=$'\n'
@@ -11,20 +12,20 @@ function pack() {
 
 	# report no output.
 	if [[ "${output}" = "" ]]; then
-		echo "Usage: pack <TARGET.ext> [FILES]"
+		help pack
 		return 2
 	fi
 
 	# report no format.
 	if [[ "${format}" = "" ]]; then
 		echo "Could not determine output format."
-		echo "Usage: pack <TARGET.ext> [FILES]"
+		help pack
 		return 2
 	fi
 
 	# All targets by default.
 	if [[ "${targets}" = "" ]]; then
-		targets=($(ls))
+		targets=(*)
 	fi
 
 	# process.
@@ -59,8 +60,9 @@ function pack() {
 	fi
 }
 
-# attempt to unpack everything.
-# usage: unpack [FILES]
+# Attempt to unpack.
+# All supported formats by default.
+# Usage: unpack [FILES]
 function unpack() {
 	local IFS=$'\n'
 	local targets=("${@}")
@@ -70,7 +72,7 @@ function unpack() {
 
 	# All targets by default.
 	if [[ "${targets}" = "" ]]; then
-		targets=($(ls | grep -E ${_UNPACK_SUPPORTED}))
+		targets=($(ls | grep -E ${_unpack_supported}))
 		total=${#targets[@]}
 	fi
 
diff --git a/.config/bash/module/parse.sh b/.config/bash/module/parse.sh
index 0550b00..8271648 100644
--- a/.config/bash/module/parse.sh
+++ b/.config/bash/module/parse.sh
@@ -1,5 +1,5 @@
-# parse data and output simplified format.
-# usage: parse_simplify <STRING>
+# Parse data and output simplified format.
+# Usage: parse_simplify <STRING>
 function parse_simplify() {
 	echo "${*}" | \
 		sed -e "s/ /_/g" \
@@ -25,8 +25,8 @@ function parse_camel() {
 	echo "${result}"
 }
 
-# parse data keeping only alphanumeric characters.
-# usage: parse_alnum <STRING>
+# Parse data keeping only alphanumeric characters.
+# Usage: parse_alnum <STRING>
 function parse_alnum() {
 	echo "${*}" | \
 		sed -e "s/[^[:alnum:]]//g"
diff --git a/.config/bash/module/permissions.sh b/.config/bash/module/permissions.sh
index 6e2c05d..e91a5da 100644
--- a/.config/bash/module/permissions.sh
+++ b/.config/bash/module/permissions.sh
@@ -1,9 +1,9 @@
-# recursively change permissions to allow read sharing with group and others. 
+# Recursively change permissions to allow read sharing with group and others. 
 function perm_share() {
 	find . -type d -exec chmod 755 {} \;; find . -type f -exec chmod 644 {} \;
 }
 
-# recursively change permissions to restrict access for group and others.
+# Recursively change permissions to restrict access for group and others.
 function perm() {
 	find . -type d -exec chmod 700 {} \;; find . -type f -exec chmod 600 {} \;
 }
diff --git a/.config/bash/module/ps.sh b/.config/bash/module/ps.sh
index a9b3ddd..c4e86e5 100644
--- a/.config/bash/module/ps.sh
+++ b/.config/bash/module/ps.sh
@@ -1,3 +1,12 @@
+# Find process and filter.
+# Usage: ps <PROCESS>
 function ps() {
-	ps aux | grep "${@}"
+	local process="${1}"
+
+	if [[ "${process}" = "" ]]; then
+		help ps
+		return 2
+	fi
+
+	/usr/bin/ps aux | sed -n -e "1p" -e "/${process}/Ip"
 }
diff --git a/.config/bash/module/ps1.sh b/.config/bash/module/ps1.sh
index b6834f1..e898d35 100644
--- a/.config/bash/module/ps1.sh
+++ b/.config/bash/module/ps1.sh
@@ -1,6 +1,6 @@
 export PROMPT_COMMAND=(__prompt_command "${PROMPT_COMMAND[@]}")
 
-# custom terminal prompt format.
+# Custom terminal prompt format.
 function __prompt_command() {
 	local last_status="${?}"
 	local is_error=false
@@ -80,6 +80,8 @@ function __prompt_command() {
 	fi
 }
 
+# Convert error code into short description.
+# Usage: _ps1error <CODE>
 function _ps1error() {
 	local type
 	case ${1} in
diff --git a/.config/bash/module/recursive.sh b/.config/bash/module/recursive.sh
index f2461b2..115fb60 100644
--- a/.config/bash/module/recursive.sh
+++ b/.config/bash/module/recursive.sh
@@ -1,6 +1,11 @@
 # Run something recursively over all directories.
 # Usage: recursive <COMMAND>
 function recursive() {
+	if [[ "${*}" = "" ]]; then
+		help recursive
+		return 2
+	fi
+
 	local IFS=$'\n'
 	local current="${PWD}"
 	local dirs=$(find -type d)
@@ -20,7 +25,7 @@ function recursive() {
 		echo -e "${color_bblue}[${count}/${total}] ${dir}${color_default}"
 
 		# run command.
-		$* || failed=${?}
+		${*} || failed=${?}
 	done
 
 	# return back on complete.
@@ -29,10 +34,14 @@ function recursive() {
 	return ${failed}
 }
 
-# Run something recursively over all directories.
+# Run something recursively over directories of 1 depth (excluding current dir).
 # Usage: recursive1 <COMMAND>
-# TODO: create generic function.
 function recursive1() {
+	if [[ "${*}" = "" ]]; then
+		help recursive1
+		return 2
+	fi
+
 	local IFS=$'\n'
 	local current="${PWD}"
 	local dirs=$(find -mindepth 1 -maxdepth 1 -type d)
@@ -52,7 +61,7 @@ function recursive1() {
 		echo -e "${color_bblue}[${count}/${total}] ${dir}${color_default}"
 
 		# run command.
-		$* || failed=${?}
+		${*} || failed=${?}
 	done
 
 	# return back on complete.
diff --git a/.config/bash/module/shopt.sh b/.config/bash/module/shopt.sh
index 3073793..b375b40 100644
--- a/.config/bash/module/shopt.sh
+++ b/.config/bash/module/shopt.sh
@@ -1,4 +1,3 @@
-# bash extensions.
 shopt -s dotglob
 shopt -s globstar
 shopt -s autocd
diff --git a/.config/bash/module/su.sh b/.config/bash/module/su.sh
index 62f3975..f0c18c7 100644
--- a/.config/bash/module/su.sh
+++ b/.config/bash/module/su.sh
@@ -1,4 +1,6 @@
-# I'm lazy af.
+# Su shortcut for lazy me.
+# Root by default.
+# Usage: s [USER]
 function s() {
-	su
+	su "${@}"
 }
diff --git a/.config/bash/module/terminal.sh b/.config/bash/module/terminal.sh
index 5b914f6..e7ddace 100644
--- a/.config/bash/module/terminal.sh
+++ b/.config/bash/module/terminal.sh
@@ -1,3 +1,4 @@
+# Get terminal size.
 function tsize() {
 	local width=$(tput cols)
 	local height=$(tput lines)
diff --git a/.config/bash/module/tmux.sh b/.config/bash/module/tmux.sh
index 78829c8..f23af17 100644
--- a/.config/bash/module/tmux.sh
+++ b/.config/bash/module/tmux.sh
@@ -1,4 +1,6 @@
-# create/attach to named session.
+# Create/attach to named session.
+# By default uses name "main".
+# Usage: ta [NAME]
 function ta() {
 	local name="$1"
 
@@ -11,12 +13,12 @@ function ta() {
 	tmux new -s "$name" 2> /dev/null || tmux attach-session -t "$name"
 }
 
-# detach.
+# Detach from running session.
 function td() {
 	tmux detach-client
 }
 
-# list.
+# List running sessions.
 function tl() {
 	tmux list-sessions
 }
@@ -31,7 +33,7 @@ function trn() {
 	tmux rename-session "${name}"
 }
 
-# Assign name (to window). Uses current dir name by default.
+# Assign name to window. Uses current dir name by default.
 # Usage: tn [NAME]
 function tn() {
 	local name="${1}"
@@ -41,7 +43,9 @@ function tn() {
 	tmux rename-window "${name}"
 }
 
-# kill specified session or default one.
+# Kill specified session.
+# By default it kills "main" session.
+# Usage: tk [NAME]
 function tk() {
 	# set default name.
 	if [[ "${1}" = "" ]]; then
@@ -54,7 +58,7 @@ function tk() {
 	done
 }
 
-# kill all sessions.
+# Kill all sessions.
 function tka() {
 	local sessions=$(tmux list-sessions | sed -e 's/:.*//')
 
@@ -63,15 +67,17 @@ function tka() {
 	done
 }
 
-# autocompletes.
+# Autocomplete with running sessions once.
 function _complete_tmux_session() {
 	_autocomplete_first "$(tmux list-sessions 2> /dev/null | sed -e 's/:.*//')"
 }
 
+# Autocomplete with running sessions.
 function _complete_tmux_sessions() {
 	_autocomplete "$(tmux list-sessions 2> /dev/null | sed -e 's/:.*//')"
 }
 
+# Autocomplete with current dir name and dirs inside this one.
 function _complete_tmux_name() {
 	_autocomplete_first "${PWD##*/}"$'\n'$(ls --classify | grep /$ | sed -e 's/\/$//')
 }
diff --git a/.config/bash/module/toolbx.sh b/.config/bash/module/toolbx.sh
index 5df9307..c1546be 100644
--- a/.config/bash/module/toolbx.sh
+++ b/.config/bash/module/toolbx.sh
@@ -1,5 +1,6 @@
-# attach/create toolbx container with default or specified name.
-# usage: tb [NAME]
+# Attach/create toolbx container with specified name.
+# By default uses "main" name.
+# Usage: tba [NAME]
 function tba() {
 	local name="${1}"
 	
@@ -36,8 +37,9 @@ function tba() {
 	fi
 }
 
-# remove toolbx container with default or specified name.
-# usage: tbk [NAME]
+# Remove toolbx container with specified name.
+# By default uses "main" name.
+# Usage: tbk [NAME]
 function tbk() {
 	local name="${1}"
 	
@@ -50,8 +52,9 @@ function tbk() {
 	podman stop "${name}" > /dev/null && podman rm "${name}" > /dev/null
 }
 
-# install rpm-fusion repository.
-# usage: tb_rpmfusion [NAME]
+# Install rpm-fusion repository into container with specified name.
+# By default uses "main" name.
+# Usage: tb_rpmfusion [NAME]
 function tb_rpmfusion() {
 	local name="${1}"
 	
@@ -64,12 +67,12 @@ function tb_rpmfusion() {
 	toolbox --container "${name}" run sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
 }
 
-# list all containers.
+# List all available containers.
 function tbl() {
 	toolbox list -c
 }
 
-# autocomplete.
+# Autocomplete with available containers.
 function _tb_containers() {
 	_autocomplete_first "$(toolbox list -c | sed -e '1d' | awk '{ print $2 }')"
 }
diff --git a/.config/bash/module/transcode.sh b/.config/bash/module/transcode.sh
index b39be7f..29439e8 100644
--- a/.config/bash/module/transcode.sh
+++ b/.config/bash/module/transcode.sh
@@ -1,4 +1,5 @@
 # Convert between different formats.
+# By default tries to convert all files.
 # Usage: transcode <FORMAT> [FILES]
 function transcode() {
 	local IFS=$'\n'
@@ -12,7 +13,7 @@ function transcode() {
 	# Report no format.
 	if [[ "${format}" = "" ]]; then
 		echo -e "${color_bred}No format specified.${color_default}"
-		echo "Usage: transcode <FORMAT> [FILES]"
+		help transcode
 		return 2
 	fi
 
diff --git a/.config/bash/module/try.sh b/.config/bash/module/try.sh
index 8bb1a06..a8714e3 100644
--- a/.config/bash/module/try.sh
+++ b/.config/bash/module/try.sh
@@ -1,9 +1,15 @@
-# retry command every 2 sec until it completes.
+# Retry command every 2 sec until it completes successfully.
+# Usage: try <COMMAND>
 function try() {
+	if [[ "${*}" = "" ]]; then
+		help try
+		return 2
+	fi
+
 	local result=-1
 	
 	while [ "$result" != 0 ]; do
-		$@
+		${*}
 		result=$?
 		if [ "$result" != 0 ]; then
 			sleep 2
diff --git a/.config/bash/module/umask.sh b/.config/bash/module/umask.sh
index 388f8c3..08b18ee 100644
--- a/.config/bash/module/umask.sh
+++ b/.config/bash/module/umask.sh
@@ -1,2 +1 @@
-# set global umask.
 umask 077
diff --git a/.config/bash/module/vdl.sh b/.config/bash/module/vdl.sh
index ef5fc7c..694f810 100644
--- a/.config/bash/module/vdl.sh
+++ b/.config/bash/module/vdl.sh
@@ -1,4 +1,4 @@
-# Download video from URL in background. When no [LINK] specified, it tries to update previously downloaded link.
+# Download video from URL. When no [LINK] specified, it tries to update previously downloaded link.
 # Usage: vdl [LINK]
 function vdl() {
 	# Check that ffmpeg and ffprobe are available.
@@ -10,12 +10,12 @@ function vdl() {
 	local target="${@}" # What to download/update.
 
 	# If no [LINK] provided, try to read from `src.txt`.
-	[[ "${target}" = "" ]] && target="$(cat src.txt)" 
+	[[ "${target}" = "" ]] && target="$(cat src.txt)"
 
 	# If could not get [LINK] eventually, show an error and exit.
 	if [[ "${target}" = "" ]]; then
 		echo -e "${color_red}Could not determine [LINK] to download.${color_default}"
-		echo "Usage: vdl [LINK]"
+		help vdl
 		return 2
 	fi
 
@@ -26,20 +26,14 @@ function vdl() {
 	yt-dlp -f 'bestvideo[height<=?1081]+bestaudio/best' --download-archive index.txt --embed-thumbnail --embed-subs --write-auto-subs --embed-metadata --merge-output-format mkv -cio '%(playlist_index)000006d_%(id)s.%(ext)s' ${target} # || _vdl_retry
 }
 
+# Temporary fix for vk downloads.
+# Usage: vdl_vk <LINK>
 function vdl_vk() {
 	vdl --format mp4 "${@}"
 }
 
-# Temporary fix for crashes.
-function _vdl_retry() {
-	for file in *.part; do
-		local number="${file%%_*}"
-		rm ${number}*
-	done
-	vdl
-}
-
-# download all videos from file.
+# Download all videos from file with links.
+# Usage: vdl_file <FILE>
 function vdl_file() {
 	vdl -a "${@}"
 }
diff --git a/.config/bash/module/vi.sh b/.config/bash/module/vi.sh
index 78ecedc..a7e7d84 100644
--- a/.config/bash/module/vi.sh
+++ b/.config/bash/module/vi.sh
@@ -1,9 +1,4 @@
-# default vim.
-function vi() {
-	vi -c "filetype plugin indent on" -c "set autoindent" -c "set tabstop=2" -c "set shiftwidth=2" -c "set expandtab" -c "set number" -- "${@}"
-}
-
-# neovim.
+# Neovim shortcut.
 function v() {
 	nvim -- "${@}"
 }
diff --git a/.config/bash/module/wallpaper.sh b/.config/bash/module/wallpaper.sh
index 84a20fd..f2cb2bc 100644
--- a/.config/bash/module/wallpaper.sh
+++ b/.config/bash/module/wallpaper.sh
@@ -1,6 +1,14 @@
-# set specified file as a wallpaper.
+# Set specified file as a wallpaper.
+# Usage: wallpaper <FILE>
 function wallpaper() {
-	path_wallpaper=~/.local/share/backgrounds/background.jpg
-	cp "$1" $path_wallpaper
-	chmod 644 $path_wallpaper
+	local target="${1}"
+	local path_wallpaper=~/.local/share/backgrounds/background.jpg
+
+	if [[ "${target}" = "" ]]; then
+		help wallpaper
+		return 2
+	fi
+
+	cp "${target}" "${path_wallpaper}"
+	chmod 644 "${path_wallpaper}"
 }
diff --git a/.config/bash/module/watch.sh b/.config/bash/module/watch.sh
index 4d18ccb..133a23f 100644
--- a/.config/bash/module/watch.sh
+++ b/.config/bash/module/watch.sh
@@ -1,12 +1,22 @@
 # Watch command output with 2 second interval.
 # Usage: w <COMMAND>
 function w() {
+	if [[ "${*}" = "" ]]; then
+		help w
+		return 2
+	fi
+
 	watch -n 2 "${@}"
 }
 
 # Watch command output with minimal interval.
 # Usage: ww <COMMAND>
 function ww() {
+	if [[ "${*}" = "" ]]; then
+		help ww
+		return 2
+	fi
+
 	watch -n 0 "${@}"
 }