Inform 4

Inform 4
Authoring system
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Developer	Graham Nelson
Format	Z-code
Interaction style	Parser
System
System details
Latest version	24 January 1994
Status	Unmaintained
Implements
Uses
Multimedia support
License
Notes
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Inform release 4 was January of 1994, and added V5 support and modernized syntax:

 From: Graham Nelson
 Subject: Major new release of Inform
 Date: 24 Jan 94 12:08:39 GMT
 Message-ID: <1994Jan24.120839.19630@oxvax>
 
 Once again Inform has been heavily re-written and improved.  The compiler
 offers very many new features, chief among which is the ability to produce
 Advanced story files as well as standard ones.  These can be much larger
 ("Trinity"-sized rather than "Zork 1"-sized) and accommodate graphical
 effects (boxes of text, character-graphic maps and so on).  Inform offers
 commands to make using these new features easy, but apart from those can
 cross-compile the same source to either format.
 
 There are much more sophisticated loop constructs and assignments;
 conditions can now be rather more complicated; various new operators and
 commands make printing, array handling and object alteration easier.  Inform
 is now quite close to C in some respects, and its syntax is much less
 clumsy (for instance, braces which obviously ought to be optional now are).
 There are also debugging and memory-mapping options.
 ...
 (Usenet post via Google)