#
# To emulate an "IF" statement within a set of IDL directives.
#

. . .

SetGlobal x1 315
SetGlobal x2 216

SetGlobal tf Conditional {x1} GE {x2}
Skip &&{tf}

&True :

Echo The clause {x1} GE {x2} is TRUE.

# Place here the "True case " directives.

Skip &EndIf :
&False :

Echo The clause {x1} GE {x2} is FALSE.

# Place here the "False case" directives.

&EndIf :

# Input scanning continues normally after processing the "IF" construct.

...