LOCK & KEY requires a graphics-capable Glulx interpreter. With any
luck, one for your platform will turn out to be available at:

http://ifarchive.org/if-archive/programming/glulx/interpreters/glulxe/

Interface help is available (and you'll know if/when you need it);
type HELP to access it. I've also left on the RECORDING and REPLAY
commands: RECORDING begins transcribing a list of commands, RECORDING
OFF stops the transcription, and REPLAY plays through the list. Other
shortcuts are mentioned in the game itself.

You may need to adjust your fonts. (You'll know if you do because a
certain window will have words wrapping strangely.) This should be
fairly easy: every interpreter should have a menu item allowing you
to change your preferences. Set the fixed-width font size to a value
that allows the text in the window to be displayed properly. (I've
found that 8-point Courier works for me.) Then use the verb REFRESH
to apply the changes. Repeat as needed.

This game was written in Oct-Dec 2001 and was beta-tested by Jennifer
Earl, Admiral Jota and Vincent Lynch. It was written in Glulx Inform;
Glulx is by Andrew Plotkin, Inform by Graham Nelson.