diff --git a/README.md b/README.md
index 97b8d6d..0a5f2b1 100644
--- a/README.md
+++ b/README.md
@@ -3,33 +3,52 @@
 A vim plugin for mail files to select email addresses from the mutt aliases file, and Google Contacts (using goobook).
 
 ## Prerequisites
-* This has been tested with the [vim-plug](https://github.com/junegunn/vim-plug) minimalist Vim plugin manager.  Other plugin managers may work.
-* This is designed to work with the [asyncomplete](https://github.com/prabirshrestha/asyncomplete.vim) code completion subsystem, which is writtin in pure Vim (v8) script.
-* [goobook](http://gitlab.com/goobook/goobook) for interacting with your Google Contacts from the command line.  This has been tested with Goobook 3.5.2, but 1.x may work if your distribution still uses Python 2.7+.
-* This is designed to work in mutt, but is not mutt-specific (except for reading _${HOME}/.mutt/aliases_).  Using vim to edit the file type `mail` should be enough to get it working.
+* This has been tested with the
+  [vim-plug](https://github.com/junegunn/vim-plug) minimalist Vim plugin
+  manager.  Other plugin managers may work.
+* This is designed to work with the
+  [asyncomplete](https://github.com/prabirshrestha/asyncomplete.vim) code
+  completion subsystem, which is writtin in pure Vim (v8) script.
+* [goobook](http://gitlab.com/goobook/goobook) for interacting with your Google
+  Contacts from the command line.  This has been tested with Goobook 3.5.2, but
+  1.x may work if your distribution still uses Python 2.7+.
+* This is designed to work in mutt, but is not mutt-specific (except for
+  reading _${HOME}/.mutt/aliases_).  Using vim to edit the file type `mail`
+  should be enough to get it working.
 
-As of this writing (2023-04-30), this has only been tested in Vim v9, but is also writtin in Vim v8 script so should work in older versions.
+As of this writing (2023-04-30), this has only been tested in Vim v9, but is
+also writtin in Vim v8 script so should work in older versions.
 
 ## Installation
-1.  Clone this repository into your Vim plugin directory. For vim-plug in Vim on Linux, this is usually _${HOME}/.vim/plugged_, but vim-plug will place it here automatically if you merely configure $MYVIMRC properly.  Place the following line between `call plug#begin(..)` and `call plug#end()`: 
+1.  Clone this repository into your Vim plugin directory. For vim-plug in Vim
+    on Linux, this is usually _${HOME}/.vim/plugged_, but vim-plug will place
+    it here automatically if you merely configure $MYVIMRC properly.  Place the
+    following line between `call plug#begin(..)` and `call plug#end()`:
+
     ```vim
     call plug#begin('...')
     " ...
     Plug 'https://git.eldon.me/trey/asyncomplete-muttgoobook.vim'
-    
     " ...
     call plug#end()
     ```
-    Then, inside Vim, run `:PlugInstall`.  You can check that the muttgoobook plugin is installed successfully with `:PlugStatus`.
-1.  Configure Vim in $MYVIMRC to load the `muttgoobook` source using the following:  
+
+    Then, inside Vim, run `:PlugInstall`.  You can check that the muttgoobook
+    plugin is installed successfully with `:PlugStatus`.
+
+1.  Configure Vim in $MYVIMRC to load the `muttgoobook` source using the
+    following:
+
     ```vim
     autocmd User asyncomplete_setup call asyncomplete#register_source({
         \ 'name':       'muttgoobook',
-        \ 'allowlist':  ['mail'],
+        \ 'allowlist':  ['mail'], 
         \ 'completor':  function('asyncomplete#sources#muttgoobook#completor'),
         \ })
     ```
-    If you want to have other file types to use this plugin, you may add them to the `allowlist` above.
+
+    If you want to have other file types to use this plugin, you may add them
+    to the `allowlist` above.
 
 1.  By default, this plugin tries to determine if the cursor is in an email
     address field ('From:', 'To:', 'Cc:', 'Bcc:', in English).  The matching is
@@ -37,14 +56,20 @@ As of this writing (2023-04-30), this has only been tested in Vim v9, but is als
     differently, you can modify this in $MYVIMRC by adding the
     `g:muttgoobook_address_fields` global variable.  This is designed to be a
     Vim regular expression, replace `['from', 'to', 'b\?cc']` accordingly:
+
     ```vim
     let g:muttgoobook_address_fields = '^\s*\(from\|to\|b\?cc\):\s*'
     ```
+
     The above pattern is the default if this variable isn't specified.
 1.  Also, if your mutt aliases file is in a different path than
     _${HOME}/.mutt/aliases_, you can override it in $MYVIMRC with the global
-    variable `g:mutt_aliases`: ```vim let g:mutt_aliases = '~/.mutt/aliases'
+    variable `g:mutt_aliases`: 
+
+    ```vim
+    let g:mutt_aliases = '~/.mutt/aliases'
     ```
+
     Again, what appears above is the default if not set explicitly to
     something else.  Any double-quotes (`"`) and backslashes (`\`) in the mutt
     aliases file will be removed before pasting the results of the completion