HP SunSoft Pascal 4.0 - Manual (Page 278)

254 Pascal 4.0 User’s Guide
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The %enable Directive
The %enable directive sets a conditional variable to true .
Syntax
%enable var1 ..., varN
Comments
A defined conditional variable is enable ( true ) when it appears in either the
%enable directive or in the -config option. Conditional variables are false
by default.
The include file, bird.h var
a: array[1..7] of char := 'penguin';
b: array[1..6] of char := 'toucan';
%var bird1
The output when you enable
bird1 with the -config option
hostname% pc -xl -config bird1 ifdef.p
hostname% a.out
Bird two is a penguin.
The output when you enable
bird2 with the -config option
hostname% pc -xl -config bird2 ifdef.p
hostname% a.out
Bird two is a toucan.