Old stuff:
resetgame
an internal command which resets trinkets, flags and your map

playremix()
a simplified command that plays polarity reversed the predestined fate remix
speaker()
changes the color of text
ex:
speaker(blue)
say
im blue da ba dee da ba die
(its only shown here according to dav
http://distractionware.com/forum/index.php?topic=693.0 )

Newer stuff:
Viridian can jump through undocumented gamestates:

It's possible to freeze Viridian, without freezing the whole screen (through gamestate trickery):

gamestate(1000) #Show cutscene bars, freeze the player, attempt to show "You have found a shiny trinket!"
delay(10)
gamestate(0) #Break out of gamestate 1000 before it can show the text
delay(40) #Just a delay, you can do whatever you want in this space
gamestate(1003) #Unfreeze the player, remove cutscene bars
Gamestate 1015 does this:

This thing, that could eventually be abused:

You can easily change menu functions through hex editing:

And I've found *so* many gamestates.
https://glaceon.ca/V/lists/#gamestates has been updated!