ENTAB - Replace Spaces With Tabs - Version 1.6

     A software tool as described by Kernigan and Plaugher which
compresses spaces into appropriate tabs as per CP/M conventions.  It
is useful for compacting a program after a modem transfer which
expands the tabs.

     ENTAB.COM reads an input text file and compresses spaces into
appropriate TABs as the text is written to an output file.  You will
be prompted for a string delimiter character (either  ''  or  "  ).
Any spaces within a string enclosed by the delimiter will NOT be
compressed to TABs.

     USAGE:',CR,LF,'  ENTAB [d1:]INFILE.TYP [d2:]

     d1:  is an optional drive for the input file.  INFILE.TYP is
the name of the input file and will also be the name of the output
file.

     d2:  is an optional drive for the output file.

     Both d1 and d2 will default to the current drive.  If d1 = d2
the filetype of the input file will be changed to .BAK

     Version 1.6 added help message.  Output drive defaults to
current drive rather than input drive.  Modified EOFILE routine.  If
version 1.5 found a single space at a TAB position it would
substitute a tab for the space.  We now output only the space.