Reference

Operation Reference Chart

Nilad	Return value	Action
()	+1	None
[]	Height of active stack	None
{}	Value of top of active stack	Pops the top value off the active stack
<>	0	Switches the active stack

Monad	Return value	Action
(...)	Inside value	Pushes the inside value to the top of the active stack
[...]	Negative inside value	None
{...}	Sum of the inside values across all executions	Executes the inside while the top of the inside stack is not 0
<...>	0	None