So that no one uses the same FCC or field for something else, I want to reserve REGX (and RX) here.
Actually, if someone do indeed implement this feature, it is your prerogative and I will as such add it to that coming ADC-Ext revision.
=== Regular expressions in SCH
This extension will add Perl's regular expressions (http://perldoc.perl.org/perlre.html) with full Unicode support to SCH.
Signal REGX in SUP and in the INF's SU field.
|RE |Regular expression according to http://perldoc.perl.org/perlre.html