Dear Colleagues -- A well-intentioned colleague has assiduously
removed all tables from his $n$-column web pages and is using
nice clean, valid, (X)HTML + CSS.  However, he is unrepentant
about his use of (say) <P class="Header"><SPAN class="Important">
rather than (say) <H1>.  I would be very grateful if a few
of you could recommend well-argued on-line papers arguing the
merits of high-level structural markup as opposed to low-level
markup with all semantic content delegated to meaningful class
names.

Philip Taylor