Separate names with a comma.
If you use Centmin Mod, then you'll spend time logged into ssh via your ssh client like putty, securecrt etc. You'll need to use a linux text...
Another nice guide at RHCSA Series: Editing Text Files with Nano and Vim / Analyzing text with grep and regexps - Part 4 :)
Would it be possible to for the shortcuts to include an option to choose the editor being used? I personally never use nano, and always use VIM.