Figure 11-6. A <noframes> message in a non-frame-capable browser
<noframes>
Sorry, this document can be viewed only with a
frame-capable browser. Go to the <a href="frame1.html">
first HTML document</a> in the set.
</noframes>
The reason <noframes> works is that most
browsers are extremely tolerant of erroneous tags and incorrect
documents. A nonframe browser simply ignores the frame tags.
What's left, then, is the content of the
<noframes> tag, which the browser dutifully
displays.
If your browser strictly enforces some version of HTML or XHTML that
does not support frames, it may simply display an error message and
refuse to display the document, even if it contains a
<noframes> tag.