To add a rule press <A> or <ENTER> and the computer will display the number
of the next available rule and ask for IF conditions.

To edit a rule that has already been entered press <E>.  You will be asked
for the number of the rule to edit.  If you wish to edit the last rule you
entered, a frequent case, just press <ENTER> otherwise input the number of
the appropriate rule.

To delete a rule press <D> and you will be asked for the number of the rule
to delete.  If you wish to delete the last rule entered press <L>, if you
press just <ENTER> the computer will return to the main menu.  The computer
will display the rule you have selected and ask if you really want to
delete this rule.  If you then press <Y> the rule will be deleted and all
subsequent rules will be renumbered.

To move rules press <M>.  You will be asked for the starting and ending
rules in the block of rules you wish to move and the rule that you wish to
insert them before.  You can use <L> to insert the block at the very end 
of the rules.  All new rules are added to the end of the rule list.

To run the rules you have entered without leaving EDITXS press <R>.  
The rules will run the same as with the runtime program.

To print the rules press <P>. You will have the option of printing either
just the rules, just the qualifiers, choices etc. or both. You will be
asked if you wish to have one per page or a continuous listing. You can
optionally also request that a cross reference listing be produced.
The can either send the text to your printer, or to a disk file for 
later use.

To change the title, author, variables, etc. press <O> to go to the 
options menu.  This menu will display many of the parameters that
have been set and allow you to modify them.

To store the rules and exit the program press <S>.  You will be asked if
you wish to store the rules to disk or just exit.  ANY CHANGES MADE DURING
THE EDIT SESSION WILL BE LOST IF NOT STORED. It will take a short time for 
the program to store the data on disk and then you will be asked if you 
wish to exit the program.  If you then press <Y> you will return to DOS, 
otherwise you will return to the main menu. It is a good idea to 
periodically store your data in case of power failure.  It is also highly 
recommended that you keep backup copies of your knowledge bases.

To go to DOS press the <Ctrl> and <X> keys at the same time. You will go
to DOS and can perform any function that you normally could from DOS,
including running other programs.  Remember, however that EDITXS remains 
resident in the computer, and the available memory is less than it would
normally be.  To return to EDITXS type  EXIT  at the DOS prompt.  It is
important to return to EDITXS, even if you do not want to save any changes
that have been made, since that is the only way to release the memory used
by EDITXS (other than rebooting the computer).

