One way an external CD-ROM may be worthwhile in a machine like
   the 1100FD or HD is text-based CD-ROMS - ones that hold loads of
   information. With it, you have a portable database. *There are
   text-based CD-ROMS that have: encyclopedias, large lists of
   phone numbers, lawyers cases, indexed by docket numbers or last
   names, or whatever, abstracts from magazines [Social Issues
   Resource Service - SIRS - is an amazing text-based database],
   and tons of other things. But yes - temporary files that the
   CD-ROM programs want to create may take up more than a 720K
   floppy disk, although I doubt that it would be a problem, as
   long as the program didn't count on drive C: :-)   via
   https://groups.google.com/d/msg/comp.sys.tandy/fMF9H-2LjMY/hZSPkGuQmHYJ
   comp.sys.tandy