SAP-Z, based on SAP 60, is a ZCPR3 utility that sorts and packs a 
disk directory.  It reads the disk directory tracks, sorts them 
alphabetically, erases the tracks with E5's, and then rewrites 
them.  A DU or DIR specification is required; anything else 
displays a usage message.  Options configurable with ZCNFG.  
Version 1.1 adds automatic hard disk relogging.