up

Extensions

This section shows the proprietary undocumented extensions to html that have been added to the various browsers. These tags are not in the draft HTML 4 specification.

A listing of HTML2 and HTML3 tags is provided elsewhere in this guide

<server>text to display in server font</server>

in netscape3, text within a server tag was shown in <server> blue </server>.

in netscape4, html tags are not expanded: <server>
<You can see the tags > </server>.

<certificate>?????????</certificate>

Unknown purpose, text contained between the tags isnt displayed in netscape3

this text is not visible in netscape3

<spell>text to underline</spell>

Marks text with a broken underline use this to indicate <spell>bad spelling</spell>
Netscape 4.3

<plaintext>text </plaintext>

Plaintext is used in the header of a document. It has no closing tag and tells the browser to display the rest of the file as plaintext.
Netscape 4.3

Layers Layers are used by netscape 4 to overlay documents, one on top of the other. 
<layer>
	<ilayer>
	<nolayers>
	</nolayers>
</layer>
A more detailed tutorial on layers is provided here

<inlineinput>text </inlineinput>

Marks text with a broken underline <inlineinput>Not known what this indicates</inlineinput>
Netscape 4.3

<nsdt>breaks line</nsdt>

Unknown purpose, inserts <nsdt>line break</nsdt>. unsure about closing tag.
Netscape 4.3

<LISTING>text</listing>

<listing>

shows the text in a tiny font with a gap above and below. </listing>
Netscape 4.3

<hype>?????????</hype>

Unknown purpose, <hype> This text is contained in a HYPE </hype>

Other tags of unknown purpose are:

CELL CHARLES COLORMAP NOEMBED EMBED JEAN LINK MQUOTE NSCP_CLOSE NSCP_OPEN NSCP_REBLOCK OBJECT SPAN SUBDOC STYLE UNKNOWN