View source for TLT vs. LL

The z dimension in this work is important to the conceptual as well 
as the physical operation of the work. Normally, I am not so much 
concerned beyond the xy. My work is first graphic, then literary, 
interactive, and whatever else, so a concern beyond 2D is not high 
priority – until now, and with thanks in part to Rita Raley’s z 
queries.

The idea of 'versus' (as opposition) demands at the
 least two sides, so, it could be represented visually with just xy. 
Previous 'dual' examples (and these are xy representations):

[http://warnell.com/pbn_io/dialog04.htm warnell.com/pbn_io/dialog04.htm]. Subject: dialog

     Email from John Cayley (/w Rita Raley), 2004

[http://warnell.com/real/dialog.htm warnell.com/real/dialog.htm]. Dialog

     Email exchange with visual poet Jim Andrews, 1997

So, thinking along that z line... the opposition 
comes not from the left or right, but from back to front ( 1 white from
 9 x white moves to top )

layer structure (top/front to bottom/rear):

top (white)

         red

         9 x variable gray/black (opposite source to below)

         9 x white (may be TLT source or LL source)

         gray 'page'

         background

The idea of the 'versus' taking the form of 'rising' 
(coming to top/front) rather than 'pushing' (as it were) from 
left/right -- this is a new way of thinking about it (opposition) for 
me... thinking on z vs xy axis(!) This opens new conceptual 
possibilities that I will continue to explore in future.