[z-machine] More questions.

[David Kinder]

Johnny Billquist wrote:
> output_stream with strem #3 is documented as being available in version 
> 5 and later, but Bureaucracy is a version 4 game which uses it.

Ummm, no:

   7.1.2: Versions 3 and later supply these and two other output streams,
   numbered 3 (Z-machine memory) and 4 (a script file of the player's whole
   commands and of individual keypresses as read by read_char).

See also the section on @output_stream.

David