What happened to input/@ismap?

[Kristof Zelechovski]

HTML 4.01 has input/@ismap[1], XHTML 1.0 does not[2].  Why?


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[1] http://www.w3.org/TR/html401/interact/forms.html#edef-INPUT

[2] XHTML
<http://www.w3.org/TR/html/dtds.html#dtdentry_xhtml1-strict.dtd_input>  1.0
- DTDs