diff --git a/modules/completion/README.md b/modules/completion/README.md
index 7efb3d96..dc2b9b83 100644
--- a/modules/completion/README.md
+++ b/modules/completion/README.md
@@ -6,6 +6,19 @@ the [zsh-completions][1] project.
 
 This module must be loaded **after** the *utility* module.
 
+Options
+-------
+
+  - `COMPLETE_IN_WORD` complete from both ends of a word.
+  - `ALWAYS_TO_END` move cursor to the end of a completed word.
+  - `PATH_DIRS` perform path search even on command names with slashes.
+  - `AUTO_MENU` show completion menu on a successive tab press.
+  - `AUTO_LIST` automatically list choices on ambiguous completion.
+  - `AUTO_PARAM_SLASH` if completed parameter is a directory, add a trailing slash.
+  - `EXTENDED_GLOB` needed for file modification glob modifiers with compinit.
+  - `MENU_COMPLETE` do not autoselect the first completion entry.
+  - `FLOW_CONTROL` disable start/stop characters in shell editor.
+
 Settings
 --------
 
diff --git a/modules/completion/init.zsh b/modules/completion/init.zsh
index 48202f37..07acf13b 100644
--- a/modules/completion/init.zsh
+++ b/modules/completion/init.zsh
@@ -99,7 +99,7 @@ zstyle ':completion:*:history-words' remove-all-dups yes
 zstyle ':completion:*:history-words' list false
 zstyle ':completion:*:history-words' menu yes
 
-# Environmental Variables
+# Environment Variables
 zstyle ':completion::*:(-command-|export):*' fake-parameters ${${${_comps[(I)-value-*]#*,}%%,*}:#-*-}
 
 # Populate hostname completion. But allow ignoring custom entries from static
diff --git a/modules/editor/README.md b/modules/editor/README.md
index c27e8642..d5280c45 100644
--- a/modules/editor/README.md
+++ b/modules/editor/README.md
@@ -1,7 +1,17 @@
 Editor
 ======
 
-Sets key bindings.
+Sets editor specific key bindings options and variables.
+
+Options
+-------
+
+  - `BEEP` beep on error in line editor.
+
+Variables
+---------
+
+  - `WORDCHARS` treat a given set of characters as part of a word.
 
 Settings
 --------
diff --git a/modules/environment/README.md b/modules/environment/README.md
index b0d579bb..6a5e582c 100644
--- a/modules/environment/README.md
+++ b/modules/environment/README.md
@@ -5,8 +5,38 @@ Sets general shell options and defines environment variables.
 
 This module must be loaded first.
 
-Environment Variables
----------------------
+Options
+-------
+
+### General
+
+  - `COMBINING_CHARS` combine zero-length punctuation characters (accents) with
+    the base character.
+  - `INTERACTIVE_COMMENTS` enable comments in interactive shell.
+  - `RC_QUOTES` allow 'Henry''s Garage' instead of 'Henry'\''s Garage'.
+  - `MAIL_WARNING` don't print a warning message if a mail file has been accessed.
+
+### Jobs
+
+  - `LONG_LIST_JOBS` list jobs in the long format by default.
+  - `AUTO_RESUME` attempt to resume existing job before creating a new process.
+  - `NOTIFY` report status of background jobs immediately.
+  - `BG_NICE` don't run all background jobs at a lower priority.
+  - `HUP` don't kill jobs on shell exit.
+  - `CHECK_JOBS` don't report on jobs when shell exit.
+
+Variables
+---------
+
+### Termcap
+
+  - `LESS_TERMCAP_mb` begins blinking.
+  - `LESS_TERMCAP_md` begins bold.
+  - `LESS_TERMCAP_me` ends mode.
+  - `LESS_TERMCAP_se` ends standout-mode.
+  - `LESS_TERMCAP_so` begins standout-mode.
+  - `LESS_TERMCAP_ue` ends underline.
+  - `LESS_TERMCAP_us` begins underline.
 
 Contributors
 ------------
diff --git a/modules/history/README.md b/modules/history/README.md
index 3dc9a264..d020688a 100644
--- a/modules/history/README.md
+++ b/modules/history/README.md
@@ -3,13 +3,6 @@ History
 
 Sets [history][1] options and defines history aliases.
 
-Variables
----------
-
-  - `HISTFILE` stores the path to the history file.
-  - `HISTSIZE` stores the maximum number of events to save in the internal history.
-  - `SAVEHIST` stores the maximum number of events to save in the history file.
-
 Options
 -------
 
@@ -26,6 +19,13 @@ Options
   - `HIST_VERIFY` does not execute immediately upon history expansion.
   - `HIST_BEEP` beeps when accessing non-existent history.
 
+Variables
+---------
+
+  - `HISTFILE` stores the path to the history file.
+  - `HISTSIZE` stores the maximum number of events to save in the internal history.
+  - `SAVEHIST` stores the maximum number of events to save in the history file.
+
 Aliases
 -------
 
diff --git a/modules/history/init.zsh b/modules/history/init.zsh
index 31db4c5b..db357b02 100644
--- a/modules/history/init.zsh
+++ b/modules/history/init.zsh
@@ -6,14 +6,6 @@
 #   Sorin Ionescu <sorin.ionescu@gmail.com>
 #
 
-#
-# Variables
-#
-
-HISTFILE="${ZDOTDIR:-$HOME}/.zhistory"       # The path to the history file.
-HISTSIZE=10000                   # The maximum number of events to save in the internal history.
-SAVEHIST=10000                   # The maximum number of events to save in the history file.
-
 #
 # Options
 #
@@ -31,6 +23,14 @@ setopt HIST_SAVE_NO_DUPS         # Do not write a duplicate event to the history
 setopt HIST_VERIFY               # Do not execute immediately upon history expansion.
 setopt HIST_BEEP                 # Beep when accessing non-existent history.
 
+#
+# Variables
+#
+
+HISTFILE="${ZDOTDIR:-$HOME}/.zhistory"  # The path to the history file.
+HISTSIZE=10000                   # The maximum number of events to save in the internal history.
+SAVEHIST=10000                   # The maximum number of events to save in the history file.
+
 #
 # Aliases
 #
diff --git a/modules/homebrew/README.md b/modules/homebrew/README.md
index 3046f98e..2a37553d 100644
--- a/modules/homebrew/README.md
+++ b/modules/homebrew/README.md
@@ -1,10 +1,10 @@
 Homebrew
 ========
 
-Defines Homebrew specific shell environment variables and aliases.
+Defines Homebrew specific environment variables and aliases.
 
-Environment Variables
----------------------
+Variables
+---------
 
 Execute the following to list the environment variables loaded in the shell:
 
diff --git a/modules/homebrew/init.zsh b/modules/homebrew/init.zsh
index cd1e5f72..d078b7ae 100644
--- a/modules/homebrew/init.zsh
+++ b/modules/homebrew/init.zsh
@@ -11,7 +11,7 @@ if [[ "$OSTYPE" != (darwin|linux)* ]]; then
 fi
 
 #
-# Environmental Variables
+# Variables
 #
 
 # Load standard Homebrew shellenv into the shell session.
diff --git a/modules/rsync/init.zsh b/modules/rsync/init.zsh
index a802222f..3618812f 100644
--- a/modules/rsync/init.zsh
+++ b/modules/rsync/init.zsh
@@ -14,7 +14,8 @@ fi
 # Aliases
 #
 
-_rsync_cmd='rsync --verbose --progress --human-readable --compress --archive --hard-links --one-file-system'
+_rsync_cmd='rsync --verbose --progress --human-readable --compress --archive \
+  --hard-links --one-file-system'
 
 if grep -q 'xattrs' <(rsync --help 2>&1); then
   _rsync_cmd="${_rsync_cmd} --acls --xattrs"
diff --git a/runcoms/README.md b/runcoms/README.md
index 9df890e5..29d9f8a9 100644
--- a/runcoms/README.md
+++ b/runcoms/README.md
@@ -10,7 +10,7 @@ in */etc* by default.
 
 User-local configuration files have the same name as their global counterparts
 but are prefixed with a dot (hidden). Zsh looks for these files in the path
-stored in the `$ZDOTDIR` environmental variable. However, if said variable is
+stored in the `$ZDOTDIR` environment variable. However, if said variable is
 not defined, Zsh will use the user's home directory.
 
 File Descriptions