definition of "fixed spatial layout

issue 77 Resize Content
Content can be resized to 400% without loss of content or functionality,
and without requiring scrolling in the direction of text except for parts
of the content where fixed spatial layout is necessary to use or meaning.

Thinking and scribbling...

fixed spatial layout - elements where the 2 dimensional arrangement of
content is necessary for use and/or perceiving relationships. Examples
include: images, maps, diagrams, video, data tables, games, <canvas>

Seems too simple. Does it need to be more complicated? The examples -
images, maps, diagrams, video, games... and perhaps <canvas>, are generally
objects that have a fixed arrangement and can't be reflowed. They can be
resized but not rearranged. Tables, it seems, are a special case.  Some
(simple ones?) can be rearranged and still retain meaning. The reflow of
more complex tables would present difficulties for users trying to discern
relationships between cells.

-- 
Jim Allan, Accessibility Coordinator
Texas School for the Blind and Visually Impaired
1100 W. 45th St., Austin, Texas 78756
voice 512.206.9315    fax: 512.206.9264  http://www.tsbvi.edu/
"We shape our tools and thereafter our tools shape us." McLuhan, 1964