If you have found the Advanced BASIC Library to be of use, you may also be
 interested in the ProBas library and toolkits.

 An even more powerful set of utilities is the ProBas library and associated
 toolkits.  ProBas is the commercial version of the ADVBAS library.  It
 contains powerful pop-up routines, lightning-fast graphics support
 (including EGA and VGA sprites, windows, PC Paintbrush file handling),
 routines to read ARC and ZIP files, virtual screens, zippy sorting, EMS and
 extended memory handling, and hundreds of other capabilities.  Excellent
 printed documentation (two 500-page manuals: tutorial and reference) is
 provided.  Add-on toolkits provide b-tree file handling, menus (pop-up,
 pull-down, ring, etc), a complete set of telecommunications services
 (dialer, file transfers [Xmodem/Ymodem], script language, etc), HyperHelp
 online documentation, screen design, and just about everything else!

 ProBas is available from Hammerly Computer Services, Inc.  To obtain more
 information or to order, call 1-800-343-7484 (voice), or try their BBS at
 1-301-953-7738 (Maryland).