ATOM text editor reminders!

1. Right click icon on Dock to remember last file
   
2. Preview window with Ctrl+Shift+H. (Also to remove)
   Right hand pane may need a little dragging towards the centre
3. Settings command is Cmd+, Choose Editor for most preferences
4. Soft wrap is already enabled
5. Good settings for a viewport: {position:absolute;left:52%;width:920px;}
6. Cmd+q to quit