Minor update to IBTWSH

The Itsy Bitsy Teeny Weeny Simple Hypertext DTD has been
updated to draft 6.1.  I have added the "meta" element,
a comment explaining the status of the "img" element,
and fixed an error in the ATTLIST declaration for the "ul"
element.

Download IBTWSH from http://www.ccil.org/~cowan/XML/ibtwsh6.dtd

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IBTWSH is an XML DTD which describes a subset of XHTML Basic for
embedded use within other XML DTDs.  It is by intention equivalent
(within its scope) to -//W3C//DTD XHTML 1.1//EN, but is
not a derived work in the copyright sense.  (Brief excerpts from
HTML 4.0 Transitional appear here and there.)

It is often convenient for XML documents to have a bit of
documentation somewhere in them.  In the absence of a DTD like
this one, that documentation winds up being #PCDATA only, which is
a pity, because rich text adds measurably to the readability of
documents.  By incorporating this DTD by reference (as an
external parameter entity) into another DTD, that DTD inherits
the capabilities of this one.  Using HTML-compatible elements
and attributes allows the documentation to be passed straight
through to HTML renderers.

-- 
Not to perambulate             || John Cowan <>
    the corridors               || http://www.reutershealth.com
during the hours of repose     || http://www.ccil.org/~cowan
    in the boots of ascension.  \\ Sign in Austrian ski-resort hotel