Commands Cheat Sheet

Syntax	Arity	Capability	Description
wait	0		Wait for one time step without doing anything.
noop	0		Do nothing. This is different than 'Wait' in that it does not take up a time step.
selfdestruct	0	Selfdestruct	Self-destruct.
move	0	Move	Move forward one step.
turn	1	Turn	Turn in some direction.
grab	0	Grab	Grab an item from the current location.
place	1	Place	Try to place an item at the current location.
give	2	Give	Give an item to another robot at the current location.
make	1	Make	Make an item.
build	2		Construct a new robot.
say	1		Emit a message.
view	1		View a certain robot.
appear	1	Appear	Set what characters are used for display.
create	1	Create	Create an entity out of thin air. Only available in creative mode.
getx	0	Senseloc	Get the current x-coordinate.
gety	0	Senseloc	Get the current y-coordinate.
blocked	0	Sensefront	See if we can move forward or not.
ishere	1		See if a specific entity is here. (This may be removed.)
random	1	Random	Get a uniformly random integer.
run	1		Run a program loaded from a file.
not	1		Logical negation.
==, /=, <=, >=, <, >	2	Compare	Binary comparison operators.
-	1	Arith	Arithmetic negation.
^, *, /, +, -	2	Arith	Binary arithmetic operators.
if	3	Cond	If-expressions.
fst	1		First projection.
snd	1		Second projection.
return	1		Return for the cmd monad.
try	2		Try/catch block.
raise	1		Raise an exception.