Style chapter for documentation-guide

[Paul W. Frields]

Addendum, as far as current problems with the captioned chapter: 

- The markup chosen by GDSG is functional but ugly when rendered. I will
try to remove the <*table> code and replace it with something less
tabular in nature wherever possible. I like the elegant way our
<example> sections are now rendered, so I'll try to stick with that.

-- 
Paul W. Frields, RHCE