<NEXTID ...>
<NOBR>
<NOFRAMES>
<NOSCRIPT>

<NEXTID ...>

This tag is a parameter read by and generated by text editing software to create unique identifiers. This element takes a single attribute which is the next document-wide alpha-numeric identifier to be allocated of the form z123 :
<NEXTID N=Z127>
When modifying a document, existing anchor identifiers should not be reused, as these identifiers may be referenced by other documents. Human writers of HTML usually use mnemonic alphabetic identifiers. Browsers may ignore the NEXTID tag. Support for the NEXTID tag does not impact browsers in any way.

<NOBR>

The <NOBR> tag stands for NO BReak. This means all the text between the start and end of the <NOBR> tags cannot have line breaks inserted. While <NOBR> is useful for character sequences that don't want to be broken, care should be taken as long text strings inside of <NOBR> elements can appear strange, especially if during viewing, the user adjust the page size by altering the window size.

<NOFRAMES>

This tag is for content providers who want to create alternative content that is viewable by non-Frame-capable clients. A Frame-capable Internet client ignores all tags and data between start and end NOFRAMES tags.

<NOSCRIPT>

Netscape now supports use of the <NOSCRIPT> ... </NOSCRIPT> container in HTML, which allows authors to write alternative content to cater for those users who browse with JavaScript capabilities disabled in the browser (or for those using non JavaScript aware browsers). If your intended HTML document comlpetely relies on JavaScript for its effect, then the alternative content should be contained within the <NOSCRIPT> ... </NOSCRIPT> container.