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From: erkyrath@netcom.com (Andrew Plotkin)
Subject: Re: Undo and the Twelve Cube Puzzle (was: [Inform] Turn off "undo")
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Date: Fri, 30 Aug 1996 20:07:13 GMT
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Julian Arnold (jools@arnod.demon.co.uk) wrote:
> > Inform doesn't provide undo: that's done by the interpreter, which
> > could certainly provide multiple-level undo if it wanted to.
>
> Zip 2000 provides multiple undo (not a hot-key), but this feature is
> only available for Infocom games.  Apparently the Inform library won't
> allow it, but could be made to do so. 

Right. The library sets a flag which prevents you from undoing twice in a 
row. If you hack the library *and* run it on a multiple-undo-supporting 
interpreter, your game will support multiple undo.

--Z

-- 

"And Aholibamah bare Jeush, and Jaalam, and Korah: these were the
borogoves..."
