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Add 'motion-preference' media feature #778

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0990e78
Add 'motion-preference' media feature
inoas Nov 30, 2016
8955e60
fix/add keyword
inoas Nov 30, 2016
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48 changes: 48 additions & 0 deletions mediaqueries/Overview.bs
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Expand Up @@ -1806,6 +1806,54 @@ All Available Interaction Capabilities: the 'any-pointer' and 'any-hover' featur
or to hide them altogether to reduce visual clutter if ''(any-pointer: fine)'' is false.
</div>

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<h2 id='mf-user-preferences'>
User Preference Media Features</h2>

<h3 id="motion-preference">
Detecting the preference for less or no motion on the page: the 'motion-preference' feature</h3>

<pre class='descdef mq'>
Name: motion-preference
Value: default | reduce | disable
For: @media
Type: discrete
</pre>

The 'motion-preference' media feature is used to detect if the user
has requested the system minimize or disable the amount of animation
or motion it uses.

<dl dfn-type=value dfn-for="@media/motion-preference">
<dt><dfn>default</dfn>
<dd>
Indicates that the user has made no preference known
to the system. This keyword value evaluates as true
in the <a>boolean context</a>.

<dt><dfn>reduce</dfn>
<dd>
Indicates that user has notified the system that they
prefer an interface that minimizes the amount of movement
or animation, preferably to the point where all non-essential
movement is removed.
<dt><dfn>disable</dfn>
<dd>
Indicates that user has notified the system that they
prefer an interface that disables movement or animation,
preferably to the point where all movement is removed.
</dl>


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