zz: Loops (was Re: [zzdev] :zz: Headcells and corner lists (wuz Re: [zzdev] :gzz: Corner lists (wuz Re: [zzdev] Re: [zzdev] Direct ion and name of d.cursor

[Ted Nelson <ted@xxxxxxxxxx>]

Tuomas sez

>The other advantage of the top cell being empty is that then all the
>cells on the list can be headcells in the other dimension.

An excellent point.

>By the way, there are some problems with loops in the structure we need
>to discuss at some point (Tuukka first noticed these). Not only looping
>ranks but other types of more complex loops.

Please tell me soon what they are !-)

All best, Ted


At 05:55 AM 7/16/00 +0300, you wrote:
>> Right now there is no way to designate a headcell on a looping rank,
>>  but when there is such a thing, we'll also need a toggle to show it,
>>  as with every other trait.
>
>By the way, there are some problems with loops in the structure we need
>to discuss at some point (Tuukka first noticed these). Not only looping
>ranks but other types of more complex loops.
>
>> The top cell need not be empty, but right now that's the only way
>>  you can conveniently rearrange the significant items on the list--
>>  the top one is locked in place by its sideways connection.  But
>>  after we implement "chug", it'll be easy to rearrange the whole
>>  corner list, including the top element.
>
>The other advantage of the top cell being empty is that then all the
>cells on the list can be headcells in the other dimension.
>
>	Tuomas
>
>
>
_________________________________________
Theodor Holm Nelson              
Project Professor, Keio University SFC Campus, Fujisawa, Japan
Visiting Professor, University of Southampton, England
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