I kind of suspect that in a century or two, some historian working on an early computing history project is going to stumble upon this and toast your name.
There was a place in another room where your way was blocked by lava; our plan was to let you drop the "nothing" on the lava, and proceed, but we had run out of memory. (28K max!)
Or did you and your friend also add the lava room? Or (this would be the really interesting case, family-tree-wise) was there already a lava room present in your version?
I can't immediately think of a lava obstacle in any version. (Well, the volcanic rift in GOET0580 and IIRC the very endgame of ROBE0665, in a sense. And the Volcano View is crossable in PLAT0550 and its descendants.)
Infocom's "Hitchhiker's Guide to the Galaxy" (1984) includes an object named "no tea", which is in your inventory for much of the game.
I've no idea where the version we started with would fall in the family tree, but this would have been ~1979, and the OS was HT-11, Heathkit's version of RT-11 for their H11 computer kit. So far as I know there was nothing special about it, except that it had been ported to RT-11 on the PDP-11.
Colossal Cave Adventure: https://en.wikipedia.org/wiki/Colossal_Cave_Adventure
