A         L    .    .    .    .    .    .    .    .    .    .    .    R
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|         [z][h]LANDMARK SOFTWARE[]
|            [z]=1142 Pomegranate Court    Sunnyvale CA 94087    408-733-4035[][~LM]
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        [b]IMPORTANT:[]  RENPATCH and the other programs in the LANDMARK 
          UTILITIES package are neither public domain nor shareware 
          programs.  Rather, they are commercial programs.  The cost of 
          the LANDMARK UTILITIES package is $29.95.  Companies wishing 
          to bundle any or all of these program should contact Landmark 
          Software for bundling prices.  Dealers should ask about our 
          DealerPak.  Corporate users should contact us about multiple 
          copy agreements and site licenses.


                             [b]What Does RENPATCH Do?[]

               RENPATCH makes it possible to use a RENAME command other 
          than the one provided by DOS.  Because RENAME is an internal 
          DOS command, you wouldn't normally be able to execute a 
          program named 'RENAME.COM' because the internal DOS version 
          would be executed instead.  RENPATCH disables the internal 
          version of RENAME and REN so you can use Landmark's enhanced 
          RENAME command.


                             [b]How Do I Use RENPATCH?[]

               As a safeguard, copy COMMAND.COM from the root directory 
          of your hard disk to a diskette--so that you'll have a copy 
          handy if needed.  Change the default drive to the hard disk 
          that you boot from, normally 'C:'.  (This is necessary 
          because RENPATCH will look for COMMAND.COM on the default 
          drive.)  Then, assuming RENPATCH.COM is on a diskette in 
          drive A, execute the command

                                  [b]A:RENPATCH ON[]

          A message will appear indicating whether or not the patch was 
          successfully applied.  Then copy RENAME.COM from the Landmark 
          Utilities diskette to your utility directory--any directory 
          on your path will do.  The command 'RENAME ?' will confirm 
          that Landmark's RENAME command is being executed.  That's all 
          there is to it.

               The command '[b]RENPATCH ?[]' summarizes this information.
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n                 [b]What Exactly Does RENPATCH Do And Is It Safe?[]

               COMMAND.COM contains a list of the names of internal DOS 
          commands.  RENPATCH simply changes 'RENAME' to 'RENAMZ' and 
          changes 'REN' to 'REZ' in that list.  So DOS no longer 
          believes that RENAME and REN are internal DOS commands.

               We feel this is all perfectly safe and trouble free.  
          Moreover, unlike most COMMAND.COM patches, this one is 
          removable:  The command

                                  [b]RENPATCH OFF[]

          removes the patch, thereby making COMMAND.COM exactly the 
          same as it was before the patch was applied.

               If you are ultra-cautious, you might like to verify 
          this assertion as follows:  Follow the instructions above 
          about copying COMMAND.COM to a diskette and then using the 
          '[b]A:RENPATCH ON[]' command.  Then use the '[b]A:RENPATCH OFF[]' 
          command to remove the patch.  Then put the diskette 
          containing the copy of COMMAND.COM in drive A: and use the 
          command 

                            [b]COMP  C:\COMMAND.COM  A:[]

          to verify that COMMAND.COM has been restored to its original 
          condition.  Then reinstall the patch.

               RENPATCH has been successfully tested with all versions 
          of IBM DOS from 1.0 through 3.3.  It was originally written 
          for IBM DOS 3.1 and worked properly without change when IBM 
          DOS versions 3.2 and 3.3 became available.  There is a very 
          high probability that it will work properly for any 
          subsequent versions of IBM DOS 3.x.  It is also likely to 
          work with all versions of MS DOS that support a RENAME 
          command; a version of MS DOS that used a different name for 
          the 'RENAME' command wouldn't need the patch to begin with.  
          The patch is not intended for use with OS/2.

               Could this patch be incompatible with anything?  Yes, a 
          program could conceivably assume that RENAME was an internal 
          DOS command (instead of using the DOS RENAME function call 
          56H) and might then bomb out when that proved not to be the 
          case.  The only commercial programs known to make this 
          questionable assumption are the installation programs for 
          System Writer and System Writer Plus, both by Omega Research.  
          The solution in such cases is to temporarily remove the patch 
          via the RENPATCH OFF command.


                         [z][g]Landmark Software[]
                             [b]1142 Pomegranate Court[]
                               [b]Sunnyvale, CA 94087[]
                                  [b]408-733-4035[]
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