This ARC file should contain:

  OCHANGE COM and ASM - The Original program and source by Michael Mefford
  CHANGE COM and ASM  - The version of the above modified by Mike Bate

Thanks to Michael Mefford (Ziff-Davis Publishing Co, the folks who bring you 
PCMagazine) for the original version of this handy utility.  Unfortunately, in 
its original form, it didn't completely meet my needs.  Changes I made include 
correcting a couple minor bugs, decreasing the size of the change buffer from  
20K to 10K to allow CHANGEing larger files, a test for impending buffer 
overflow and several more informative error messages.  The .ASM listings for 
both versions are included for those of you who may wish to make further 
refinements.  


More misc info, limitations, etc....

Maximum filesize for FILENAME before the change is 50K bytes.

The format for using CHANGE is  CHANGE FILENAME "old-text" "new-text"

The maximum amount you may increase filesize is 10K. (if the length of old-text 
  is about the same as new-text, you're in good shape - if you want to change 
  every occurance of "e" to "asdfghjklqwerty" in a 50K file, CHANGE may not be
  the right utility for the job).  CHANGE now checks for an impending buffer 
  overflow and aborts the change before this occurs - with an error message.

  FILENAME is (obviously) the name of the file you wish to change.  ALL 
    occurances of old-text are changed.
  OLD-TEXT and NEW-TEXT may be any strings except the quote sign.
  The OLD and NEW text strings enclosed in quotes must be separated by a space.
  ASCII characters may be included by their codes too - separate them from the 
    string in quotes with a comma.  For example, to change "<ascii 27> ABC" to 
    "esc DEF" in a file called TEXT1...    CHANGE TEXT1 27,"ABC" "esc DEF"