File: SH.HIS                      History of SH.COM


Authors: Richard Conn, Dreas Nielsen
Current version: 2.0


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Version: 1.0
Date: 3/4/84

Original release by Richard Conn.


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Version: 1.1
Date: 3/6/87

Modifications:
1) Fixed failure to resolve a variable reference at beginning of line.
2) Looks in directory named "ROOT" for shell variable file, and at root of
   memory-based path if no such named directory exists.
3) Doesn't automatically install SH.VAR if another variable file is defined.
4) Stays resident if no following commands on MCL.
5) Allows quote and apostrophe characters to delimit a shell variable name.
6) Includes a scrolling line editor responding to cursor keys, and with
   recall of the previous command.

Modified by:
   Dreas Nielsen
   16713 SE 12th St.
   Bellevue, WA   98008

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Version: 2.0
Date: 5/1/87

Modifications:
1) Fixed a couple of defects introduced in v. 1.1.
2) Removed the internal commands "shcmt", "shecho", and "shexit".
   Exiting is now accomplished by striking ^X at the beginning of an empty
   line.
3) Added several new commands to the line editor.
4) Added a 20-line history, using up- and down-arrow keys (as defined in 
   the TCAP) to move backward and forward.  The history list is kept in
   the file SH.HST in the "ROOT" directory or at the bottom of the 
   path if the "ROOT" directory doesn't exist.
5) Added a field for an alternative load address, for use under ZCPR3.3.
6) Added brief help invoked by "SH //".
7) Compacted and speeded up code throughout.

Modified by:
   Dreas Nielsen
   16713 SE 12th St.
   Bellevue, WA   98008
   (206) 746-2782

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