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If

Evaluates and returns a given statement if the condition is true. If the condition is false, another statement is evaluated and returned.

Syntax

if
   ·  [condition]
   ·  [ifTrue]
   ·  [ifFalse]

condition: A statement that evaluates to boolean.
ifTrue: The statement to evaluate and return if the condition is true.
ifFalse: The statement to evaluate and return if the condition is false.