> Procedural markup like <em strikeout> would not allow this. Semantic
> markup will. I regret that I don't have a specific proposal of my own
> as to how to do this markup.
I would like to suggest using the HTML+ EM tag:
a) two new logical roles: "deletion", "addition"
b) a new rendering hint: strikeout
e.g. <em role=deletion strikeout>old text</em> and then a bit later
some <em role=addition> new text</em>.
Dave Raggett