Contents of the "proginfo" subdirectory for UnZip 5.3 and later:

  Contents	this file
  CONTRIBS	list of contributors to UnZip
  ZipPorts	Info-ZIP rules and guidelines on contributions to the cause
  3rdparty.bug  known bugs in PK[UN]ZIP, WinZip, etc.
  defer.in	info about the NEXTBYTE macro and defer/undefer_input functions
  extra.fld     info about all known "extra field" types
  fileinfo.cms  info about the VM/CMS file system, including record formats
  nt.sd         info about support for Windows NT's Security Descriptors (ACLs)
  perform.dos   relative performance of Zip and UnZip with various DOS compilers