As a long-time Pro Tools user, I relied heavily on certain daily tools for audio editing. To replicate those tools and workflows in Reaper, I decided to script similar actions so I could use them in Reaper as well :

• CutLeft : Removes the left part of the selected media item from the playback position.

• CutRight : Removes the right part of the selected media item from the playback position.
  
  

• MoveEditCursorToNextCut : Moves the edit cursor to the next cut in any media item and selects it.

• MoveEditCursorToPreviousCut : Moves the edit cursor to the previous cut in any media item and selects it.

• NudgeCursorToTheLeft : Moves the playback cursor 1 frame to the left and plays the audio.

• NudgeCursorToTheRight : Moves the playback cursor 1 frame to the right and plays the audio.
  
  Note : The "move edit cursor" actions work on the currently selected track, or only on the first track if multiple tracks are selected.