Arbortext IsoDraw > Macro Language Reference > Functions and Data Types > Simple Data Types > Booleans
  
Booleans
A boolean represents a "truth value" - it says whether something is true or not. Truth and falseness determine the outcome of conditional code such as:
DEFINE test AS boolean
test = true

IF (test = true) THEN
#do something
ELSE
#do something ELSE
END IF