Key Stroke commands in sikuli

I am trying to have sikuli perform certain keystrokes such as "Enter" and the four directional arrow keys. If anyone knows what command I must input into sikuli in order to have it perform these functions, I would greatly appreciate the help.

A complete list of all keystroke shortcuts could be helpful as well if anyone has them, because the names printed directly on to the keys dont always seem to be what sikuli is looking for.