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:zz: Why we need more than one mark dimension

I think we've covered this.

If there is just a mark dimension, there can only be one mark
 on a cell.  Not very general.


At 03:27 AM 8/10/98 +1000, you wrote:
>On Sat, Jul 04, 1998 at 09:23:22PM +1000, Gossamer wrote:
>> Ted Nelson wrote:
>> > When we get Cell Types, "mark" will be a separate type.
>> > Till then, we assume that anything beginning "m."
>> >  and posward of something else is a mark cell.
>> You mean anything with the dimension named m.*, or with the cell
>> content beginning with that?
>I think Ted was intending to use the cell content.  But that's not
>necessary, since (analagous to the cursor dimensions) anything not at
>the head of a mark dimension is a mark cell.
>However, since "mark" is really a relationship between cells, I can't
>see any reason to actually have "mark cells" at all.  Why not just have a
>mark dimension, and all the cells linked in a list in the mark dimension
>are part of that mark group?  The mark groups, of course, should still
>be linked together in the marklist dimension to allow moving between
>mark groups.  This substantially simplifies things (including eliminating
>the need for a "mark group counter").  Ted?
>	*** Xanni ***
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