Rivers of white(3.4.4)

A good article, defines user need for dyslexia, screen magnifiers:
http://www.pws-ltd.com/sections/articles/2009/justified_text.html
With simple justified text (as seen in the right-hand column above) the
uneven variation in spacing between words makes the text more difficult to
read because, instead of moving smoothly along the line, the eye has to
jump from word to word. For people with certain disabilities such as
dyslexia the problems can be serious; justification can interfere with
their ability to understand the text at all

short concise definition and builds in user issue. We could write something
new, or site this. Would change 'negative space' to "negative (white)
space"
http://opusdesign.us/graphic-design-tip-removing-rivers-and-working-with-justified-text/
*Rivers: *Gaps of uneven negative space between words in a paragraph. If
there are many of these gaps in the paragraph, it looks like a “river” of
negative space flowing through and it makes text hard to read.

-- 
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