Commands

ApplicationCommands.  
clipboard commands (Copy, Cut, Paste)
document commands (New, Open, Save, SaveAs, Print).

NavigationCommands. navigation,
page-based ( BrowseBack, BrowseForward, and NextPage)
document-based  ( IncreaseZoom and Refresh).

EditingCommands. document-editing commands,
for moving around (MoveToLineEnd, MoveLeftByWord, MoveUpByPage),
selecting content (SelectToLineEnd, SelectLeftByWord),
changing formatting (ToggleBold and ToggleUnderline).

ComponentCommands. user-interface components
 selecting content (and even duplicate)
 EditingCommands .

MediaCommands. multimedia
( Play, Pause, NextTrack, and IncreaseVolume).v