html-spec/StatusMeanings.html at master · dckc/html-spec · GitHub

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<!DOCTYPE HTML PUBLIC "-//W3O//DTD WWW HTML 2.0//EN">
<HTML>

<HEAD>
<TITLE>Vocabulary usied in the HTML specification</TITLE> <NEXTID
N="z9"></HEAD>

<BODY>

<H1>Vocabulary</H1>

<P>This <A NAME="z3" HREF="HTML.html">specification</A> uses
the words below with the precise meaning given.

<DL>

<DT>Representation

<DD>The encoding of information for interchange.
For example, HTML is a representation of hypertext.

<DT>Rendering

<DD>The form of presentation to information to the human reader.
</DL>

<H2>Imperatives</H2>

<DL>

<DT>may

<DD>The implementation is not obliged to follow this in any way.

<DT>must

<DD>If this is not followed, the implementation does not conform
to this specification.

<DT>shall

<DD>as "must"

<DT>should

<DD>If this is not followed, though the implementation officially
conforms to the standard, undesirable results may occur in practice.

<DT>typical

<DD>Typical rendering is described for many elements.
This is not a mandatory part of the standard but is given as
guidance for designers and to help explain the uses for which
the elements were intended.
</DL>

<H2><A NAME="z6">Notes</A></H2>

<P>Sections marked "Note:" are not mandatory parts of the specification
but for guidance only.

<H2>Status of features</H2>

<DL>

<DT><A NAME="z2">Mandatory</A>

<DD>These features must be implemented in the rendering.
Features are mandatory unless otherwise mentioned.

<DT><A NAME="z5">Optional</A>

<DD>Standard HTML features which may safely be ignored by minimally
conforming impelementations. It is legal to ignore these,
treat the contents as though the tags were not there.
(e.g. EM, and processing instructions) .
Authors should be aware that these features may be ignored by
some applications.

<DT>Proposed

<DD>The specification of these features is not final.
They should not be regarded as part ofthe standard,
but indicate possible directions for future versions.

<DT><A NAME="z8">Obsolete</A>

<DD>Not standard HTML. Parsers should implement these features
as far as possible in order to preserve back-compatibility with
previous versions of this specification.
</DL>
</BODY>
</HTML>