IF -- conditional statement for numbers

OPERATION = $\langle{\tt string:1}\rangle$	'SUM'	EQ | GT | LT | GE | LE | NE

Description:

This command performs conditional IF operation on two real arguments. The possible operations are equal (EQ), greater than (GT), less than (LT), greater or equal (GE), less or equal (LE), and not equal (NE). If the condition is true, the command specified in the THEN variable is executed. Otherwise the command in the ELSE variable is executed. Typically, these commands are GO_TO statements.