The original Games Computing version uses a non-standard 'L' (for LOOK) to see if there's any objects in the room and 'A' (for AGAIN) to redisplay the room description.
Some ports of this game to the C64 do not credit the original author. These include The Search for the Holy Grail, which is instead credited to Allan Grigsby, and The Holy Grail, credited to Andrew Field.
The game was ported to the BBC Micro in 2020; download & play here.
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