You will be asked to identify a procedure that should have been loaded into the programme editor before starting SuperView.

If this routine is present then the main file will be filtered to the currently displayed selection.

There are no restrictions on what you do in the routine.

If you change the filter then when control returns to SuperView the filter will be reset.

An example of exproc() is displayed below:

This will print the field KeyPat.PATFIL to the current display for each of the currently selected records.