<li>All types that the user agent supports displaying natively in a <a href=#browsing-context>browsing context</a> during <a href=#navigate title=navigate>navigation</a></li>
</ul><p class=note>This list can be changed. If there are schemes
that should be added, please send feedback.</p>
</dd>
<query> production defined in RFC 3986 by the
percent-encoded form of that character. <a href=#refsRFC3986>[RFC3986]</a></p>
<p>User agents must raise a <code><a href=#syntax_err>SYNTAX_ERR</a></code> exception if
the <var title="">url</var> argument passed to one of these
methods does not contain the exact literal string
"<code>%s</code>", or if <a href=#resolve-a-url title="resolve a
url">resolving</a> the <var title="">url</var> argument with
the first occurrence of the string "<code title="">%s</code>"
removed, relative to the <a href=#entry-script>entry script</a>'s <a href="#script's-base-url" title="script's base URL">base URL</a>, is not successful.</p>
<div class=example>
<p>If the user had visited a site at <code title="">http://example.com/</code> that made the following
</dd>
</dl><p>User agents should raise <code><a href=#security_err>SECURITY_ERR</a></code> exceptions if
the methods are called with <var title="">scheme</var> or <var title="">mimeType</var> values that the UA deems to be
"privileged". For example, a site attempting to register a handler
for <code>http</code> URLs or <code><a href=#text/html>text/html</a></code> content in a
Web browser would likely cause an exception to be raised.</p>
<p>User agents must raise a <code><a href=#syntax_err>SYNTAX_ERR</a></code> exception if the
<var title="">url</var> argument passed to one of these methods does
not contain the exact literal string "<code>%s</code>", or if <a href=#resolve-a-url title="resolve a url">resolving</a> the <var title="">url</var>
argument with the first occurrence of the string "<code title="">%s</code>" removed, relative to the <a href=#entry-script>entry
script</a>'s <a href="#script's-base-url" title="script's base URL">base URL</a>, is
not successful.</p>
<p>User agents must not raise any other exceptions (other than
binding-specific exceptions, such as for an incorrect number of
arguments in an JavaScript implementation).</p>
<p>This section does not define how the pages registered by these
</dl><p>This section does not define how the pages registered by these
methods are used, beyond the requirements on how to process the <var title="">url</var> value (see above). To some extent, the <a href=#navigate title=navigate>processing model for navigating across
documents</a> defines some cases where these methods are
relevant, but in general UAs may use this information wherever they
<p>This section describes a convention for use with the IANA URI
scheme registry. It does not itself register a specific scheme. <a href=#refsRFC4395>[RFC4395]</a></p>
<dl><dt>URI scheme name</dt>
<dd>
Schemes starting with the four characters "<code title="">web+</code>" followed by one or more letters in the range
<code title="">a</code>-<code title="">z</code>.
</dd>
<dt>Status</dt>
<dd>permanent</dd>
<dt>URI scheme syntax</dt>
<dd>Scheme-specific.</dd>
<dt>URI scheme semantics</dt>
<dd>Scheme-specific.</dd>
<dt>Encoding considerations</dt>
<dd>All "<code title="">web+</code>" schemes should use UTF-8 encodings were relevant.</dd>
<dt>Applications/protocols that use this URI scheme name</dt>
<dd>Scheme-specific.</dd>
<dt>Interoperability considerations</dt>
<dd>The scheme is expected to be used in the context of Web applications.</dd>
<dt>Security considerations</dt>
<dd>
Any Web page is able to register a handler for all "<code title="">web+</code>" schemes. As such, these schemes must not be
used for features intended to be core platform features (e.g.
network transfer protocols like HTTP or FTP). Similarly, such
schemes must not store confidential information in their URLs,
such as usernames, passwords, personal information, or
confidential project names.
</dd>
<dt>Contact</dt>
<dd>Ian Hickson <ian@hixie.ch></dd>
<dt>Author/Change controller</dt>
<dd>Ian Hickson <ian@hixie.ch></dd>
<dt>References</dt>
<dd>W3C</dd>
</dl><h2 class=no-num id=index>Index</h2>
<div class=impl>
<dd>(Non-normative) <cite><a href=http://tools.ietf.org/html/rfc4329>Scripting Media
Types</a></cite>, B. Höhrmann. IETF.</dd>
<dt id=refsRFC4395>[RFC4395]</dt>
<dd><cite><a href=http://tools.ietf.org/html/rfc4395>Guidelines and Registration Procedures for New URI Schemes</a></cite>, T. Hansen, T. Hardie, L. Masinter. IETF.</dd>
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