Commit 10c255d

"description": "The ultimate futuristic racing game from the future!",

"background_color": "red",

"screenshots": [{

"src": "screenshots/in-game-1x.jpg",

"sizes": "640x480",

"type": "image/jpeg"

},{

"src": "screenshots/in-game-2x.jpg",

"sizes": "1280x920",

"type": "image/jpeg"

}]

<li>Set <var>manifest</var>["<a>categories</a>"] to the result of

running <a>processing the <code>categories</code> member</a> given

<var>json</var>["<a>categories</a>"].

</li>

<li>Set <var>manifest</var>["<a>screenshots</a>"] to the result of

running <a>processing `ManifestImageResource` members</a> given <var>

manifest</var>["<a>screenshots</a>"] and <var>manifest URL</var>.

</li>

USVString description;

sequence&lt;ManifestImageResource&gt; screenshots;

sequence&lt;USVString&gt; categories;

DOMString iarc_rating_id;

<section>

<h3>

<code title="">description</code> member

</h3>

<p>

The <dfn>description</dfn> member allows the developer to describe

the purpose of the web application.

</p>

</section>

<section>

<h3>

<code title="">categories</code> member

</h3>

<p>

The <dfn>categories</dfn> member describes the expected application

categories to which the web application belongs.

</p>

<p>

The <a>categories</a> member is only meant as a hint to catalogs or

stores listing web applications and it is expected that these will

make a best effort to find appropriate categories (or category) under

which to list the web application. Like search engines and meta

keywords, catalogs and stores are not required to honor this hint.

</p>

<p>

The steps for <dfn>processing the <code>categories</code>

member</dfn> are given by the following algorithm. The algorithm

takes a sequence&lt;<a>USVString</a>&gt; <var>categories</var> as an

argument. This algorithm returns an

<code>Array&lt;USVString&gt;</code>.

</p>

<ol>

<li>[=list/For each=] <var>category</var> of <var>categories</var>:

<ol>

<li>[=set/Replace=] <var>category</var> within

<var>categories</var> with <var>category</var>, <a>ascii

lowercased</a>.

</li>

</ol>

</li>

<li>Return <var>categories</var>.

</li>

</ol>

<p>

The categories <a>string</a> array is case insensitive and converted

to lower-case by following the processing algorithm. Thus,

<code>sports</code>, <code>Sports</code>, <code>SPORTS</code>, and

<code>SpOrTs</code> are all equivalent.

</p>

<p class="note">

Manifest authors are encouraged to use lower-case.

</p>

<p class="note">

This specification does not define the particular values for

<dfn>USVString</dfn>s for the <a>categories</a> member. However, the

working group maintains a <a href=

"https://github.com/w3c/manifest/wiki/Categories">list of known

values</a> in our wiki.

</p>

</section>

<section>

<h3>

<code title="">screenshots</code> member

</h3>

<p>

The <dfn>screenshots</dfn> member is an <a>array</a> of

{{ManifestImageResource}}s, representing the web application in

common usage scenarios.

</p>

</section>

<section>

<h3>

<code title="">iarc_rating_id</code> member

</h3>

<p>

The <dfn>iarc_rating_id</dfn> member is a <a>string</a> that

represents the <a href="https://www.globalratings.com/">International

Age Rating Coalition (IARC)</a> certification code of the web

application. It is intended to be used to determine which ages the

web application is appropriate for.

</p>

<p class="note">

An IARC certificate can be obtained via participating storefronts,

intended to be used for distributing the web app. The

<a>iarc_rating_id</a> member only takes a single certification code.

The same code can be shared across participating storefronts, as long

as the distributed product remains the same (i.e., doesn’t serve

totally different code paths depending on user agent sniffing and the

like) and the other storefronts support it.

</p>

<div class="informative">

<p>

The following shows a very simple <a>manifest</a> with the

<code>iarc_rating_id</code> member.

</p>

<pre class="example json" title="very simple manifest">

{

"name": "Donate App",

"description": "This app helps you donate to worthy causes.",

"iarc_rating_id": "e84b072d-71b3-4d3e-86ae-31a8ce4e53b7",

"icons": [{

"src": "images/icon.png",

"sizes": "192x192"

}]

}

</pre>

</div>

<p>

More information on the IARC can be found at: <a href=

"https://www.globalratings.com/how-iarc-works.aspx">How IARC

Works</a> and <a href=

"https://www.globalratings.com/for-developers.aspx">How developers

can get their games and apps rated with IARC</a>.

</p>

</section>

To allow the community can easily find extensions, please add your