COPYRIGHT
(taken directly from the V1.3 distribution from Paul Hayter)

 ZSHELL IS FREELY DISTRIBUTABLE. YOU CAN DISTRIBUTE THIS AS LONG AS
 THIS DOC FILE REMAINS WITH THE EXECUTABLE, AND THAT NO CHARGE IS MADE FOR
 THEM (APART FROM A NOMINAL COPYING CHARGE). IF YOU FEEL LIKE SENDING
 ME SOMETHING FOR THIS PROGRAM, SEND ME A POSTCARD!, A P.D. DISK, A
 PROGRAM YOU'VE BEEN WORKING ON ,BUT DON'T SEND ME ANY MONEY (WELL, IF
 YOU REALLY, REALLY WANT TO, I GUESS I COULD PUT UP WITH IT).

Note from Martin:

 This is an update to Version 1.3 on the Fish Library Disk 537 from
 Paul Hayter. I (Martin) tried to ask him for permission to release
 this, but he has not answered. Because the copyright notice is left
 unchanged and the original executable with documentation is included,
 I do not think that I am doing something nasty.
 (In the original distribution there was the source code included
 and there is nothing stated to distribute it only unmodified.)

 To make things easier I accept the same copyright notice for the parts
 I have written. They are marked in the source with V2.x (well, mostly).
 I estimate that about 70% of the source, executable and the documentation
 is from me.

  I  would like to get your comment on ZShell to see if anybody is
 using it and what can be improved.