Attributes defined elsewhere
id, class (document-wide identifiers)
title (element title)
style (inline style information)
name, src, frameborder, marginwidth, marginheight, scrolling (frame controls and decoration)
target (target frame information)
align (alignment)
The IFRAME element allows authors to insert a frame within a block of text. Inserting an inline frame within a section of text is much like inserting an object via the OBJECT element: they both allow you to insert an HTML document in the middle of another, they may both be aligned with surrounding text, etc.
The information to be inserted inline is designated by the src attribute of this element. The contents of the IFRAME element, on the other hand, should only be displayed by user agents that do not support frames or are configured not to display frames.
For user agents that support frames, the following example will place an inline frame surrounded by a border in the middle of the text.
<IFRAME src="foo.html" width="400" height="500" scrolling="auto" frameborder="1"> [Your user agent does not support frames or is currently configured not to display frames. However, you may visit <A href="foo.html">the related document.</A>] </IFRAME>
Inline frames may not be resized (and thus, they do not take the noresize attribute).
Note. HTML documents may also be embedded in other HTML documents with the OBJECT element.