It is in the documentation above. Under “Enemy” - Std means Stand (the enemy just stands there), Rgt and Dwn means the enemy will either march right and left, or down and up (between walls), and Sk means the enemy will seek out the player right away. Init means the level initializes with the enemy right away, whereas Spawn means the enemy will spawn only when the player walks over a Trigger. And Shift-X means X can be any key - if you are in the middle of nowhere, Shift-S will immediately bring you to the Start (if there is one) and Shift-E will immediately bring you to each enemy in succession. I will try to improve the documentation.
Viewing post in Escape From PETSCII Planet - Level Designer comments
Ah, apologies for missing the entire bit about the documentation. I wents hands on, immediately there. I think everything else appears to be even made in such a way that it all explains itself then.
Kinda wish I was able to freely define the dimensions of doors for purely creative reasons, but only because I'm spoiled from mid-90s Doom wad editing, where I would create doors the shape of an X in the center of a plus intersection of corridors and such. ^^
You rock, I'm back playing with the editor.