Re: Lout gui

[Valeriy E. Ushakov]

On Mon, May 17, 1999 at 10:37:18AM -0700, address@hidden wrote:

> I've got some ideas about how to make Lout interactive, even on page 99 of a
> document, by using tools which make memory transactional so you can save and
> restore checkpointed memory images. 

FYI.  I'm not sure if this is in the docs or if I have learned this
from e-mail exchange with Jeff, but Lout uses functional language
exactly because it was initially conceived with an interactive system
in mind; not the LyX style frontend, but the system where all
on-screen layout is also driven by the actual layout engine.

While your idea about checkpointing engine state is aimed at changing
the _text_ on the fly, there are also a lot of other interesting
aspects of interactive Lout, e.g changing _definitions_ on the fly,
which brings a lot of interesting problems to solve.

SY, Uwe
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