aux statement

The aux statement enables or disables spooling to the auxiliary port.

Syntax

aux [off|on|exp]

on	Enables spooling to the auxiliary port and saves the p and h flags of the current TCL sp-assign status.
off	Reverses the effect of the last executed aux on statement. It turns off auxiliary port printing, and restores the previous status of the p and h flags of the current TCL sp-assign status.
`exp`	In the expression form, auxiliary printing is disabled when the expression evaluates to false. It is enabled when the expression evaluates to true. In an expression, 0 = aux off and nonzero = aux on.

CAUTION:

aux off should never be executed without a preceding aux on because aux off assumes that information has been saved by aux on.

Note: The aux statement must appear before the first output to a print job to take affect properly.