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                                      SHCTRL.COM                              

             Size (recs) CRC   Version    Author/Latest Issue      Disk
               2k (9)    3AD1  1.1        Bruce Morgen 3/88        Z3COM8

  1-Syntax/Options  2-Notes  3- Examples of Use                               



   SHCTRL  provides  some  control of the ZCPR3 Shell Stack from  the  command 
line.   The contents of the shell stack can be displayed and popped one  level 
or cleared completely.
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   Syntax:  SHCTRL o

  Options:  C[LR]       <-- clear the Shell Stack (no shell is in effect)
 
            D[IS]       <-- display Shell Stack

            P[OP]       <-- pop the Shell Stack (the current shell is 
                              stopped and the next shell on the stack is
                              invoked)
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SHCTRL Notes:

   a. Only one option may be used in conjunction with the SHCTRL command.  Any
      characters following this option are ignored.

   b. SHCTRL is  intended for  use  in situations where  a directory change is
      desired and  a shell,  such as MENU,  is in execution.   The Shell Stack
      can be popped,  the directory change performed,  and  the original shell
      explicitly reinvoked.

   c. With version 1.1,  SHCTRL C truly clears  (zero fills) the  entire shell
      stack,  SHCTRL D shows bytes AFTER the shell verb terminator (often used
      by late-model shells like ZPATCH, etc.) in ASCII and HEX as appropriate.
      Version 1.1 also provides Z33 Type 3 format with safety header, etc.  
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Examples of Use:

   a. SHCTRL P       <-- pop the Shell Stack one level

   b. SHCTRL D       <-- display the contents of the Shell Stack
