I'm definitely aware that you don't always want to have to point and click, but since most of us don't have all of the calls memorized, I think the menu's make it a lot easier to insert a call. Note that it works as a bare bones text editor as well. There are many flaws in the current design, and with time, I intend to iron them out and expand to include more features. I'm learning as I go, however, so don't expect miracles.
EDIT: You posted while I was writing, Kel. I'm not sure why it doesn't run properly on a Mac, not having one myself. You do have Java installed, right?