Whoa-hoah, hold the phone there; I thought the whole _point_ of the
<PLAINTEXT> tag is so that no further parsing for markup need be done on
the remainder of the file (e.g. for performance reasons). At least,
that's what I remember reading in the spec...
But getting back to the <PRE> tags, yes, you can have markup inside it,
and the effects of nested tags should be _cumulative_. [at least, _I_
feel strongly that they should be].
It seems to me that if <PRE><B>text</B></PRE> is not rendered in a BOLD
TYPEWRITER font of the SAME SIZE, it's a bug (or "inadequacy") in the
browser. AIX Mosaic, for example, can't even do
<B><I>bolditalic</I></B> correctly, so I wouldn't use it as the
definitive example of how things ought to be rendered.