The practical upshot of this is that any code changes we make that affect the HTML output should continue to be tested on MSIE 5 and 6 (both if possible), Gecko, and (alas) Netscape 4.
Hmm! No mention of Netscape 6.x - Maybe I should never have upgraded from 4.
Netscape 6 and later are Gecko-based, aren't they?
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