Since AGT is now freeware, there are some tricks you might like to try
with the games.  Some have debug in place and you can use these
commands when you get stuck:
LISTNOUNS -- the list of nouns with locations.
LISTROOMS -- the list of rooms
   note about rooms:  you can never see all of them.  Each 'death'
   scene is a room and you only see one at a time.  Some rooms are
   not to visit, but store items or restore the player after 'death'.
LISTCREATURES -- some times the creature list is with nouns.

In case your save brings forth a message that the game has changed and
the file is not valid, you can edit it.  Just make a new save (you do
not have to make any moves) and compare them.
Old Save:                     New Save:
--------------------------    ------------------------
KLAUS1.DAT                    KLAUS1.DAT              (game used)
4409                          4398                    (byte count)
706                           710                     (moves)
17                            10                      (times saved)
12                            5                       (times restored)
500                           500                     (points)
3000                          3000                    (win/treasure rm)
0                             0
1                             1
11                            11
2                             2
verbose                       verbose
299                           299                (Klaus=storage room)
FALSE                         FALSE              (Flag 0)
FALSE                         FALSE              (Flag 1)  etc
(etc)                         (etc)

To make the save work, edit the byte count on line 2 to match the new
save.
Line 326 in Klaus is the amount of money available.
In Klaus 3, edit line 326 from 0 to 340 to pay the cab.
Also, the Variable for money is #5.
You can play with the flags and the nouns, variables, etc, follow.
You can change a 0 to a 1 or whatever and see what happens.
The flags are false for off and true for on.  They are used to keep
track of actions like putting the food in the cupboard.  OFF -> ON
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