The Phoenix Developer Consortium site uses XHTML tags. The stylefree theme replaces CSS descriptions with hardcoded tags, but these are XHTML format. (To check, use this URL: http://phinixi.com/tiki-switch_theme.php?theme=stylefree.css . This is a work in progress.) MorphOS browsers seem to handle the tags OK. (Even after Tokai's info I haven't gotten around to getting my own Pegasos on line yet to test directly -- soon, I hope.
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-- gary_c