Fix #23: Move content from Use Cases to Scope

- Update [MEDIAQUERIES-4] -> [MEDIAQUERIES-5]
  (note: not published on TR, thus no specref entry)

index.bs

@@ -46,6 +46,14 @@ The Ambient Light Sensor extends the Generic Sensor API [[GENERIC-SENSOR]]
 to provide information about ambient light levels,
 as detected by the device's main light detector, in terms of lux units.
 
+Scope {#scope}
+-----
+
+For document styling use cases that do not require accuracy, low latency, and high frequency,
+the `light-level` CSS media feature [[MEDIAQUERIES-5]] can be more appropriate. The `light-level`
+media feature has a set of pre-defined values that represents a composite of screen brightness,
+screen technology, ambient light level, and possibly other factors depending on implementation.
+
 Note: it might be worthwhile to provide a <a>high-level</a> Light Level Sensor
 which would mirror the `light-level` media feature, but in JavaScript.
 This sensor would *not require additional user permission to be activated*
@@ -149,11 +157,6 @@ While some of the use cases may benefit from obtaining precise ambient light mea
 cases that convert ambient light level fluctuations to user input events, would benefit from
 higher [=sampling frequency|sampling frequencies=].
 
-Note: For document styling use cases that do not require accuracy, low latency, and high frequency,
-the `light-level` CSS media feature [[MEDIAQUERIES-4]] can be more appropriate. The `light-level`
-media feature has a set of pre-defined values that represents a composite of screen brightness,
-screen technology, ambient light level, and possibly other factors depending on implementation.
-
 Acknowledgements {#acknowledgements}
 ================
 

index.html

@@ -1431,7 +1431,7 @@
   <div class="head">
    <p data-fill-with="logo"><a class="logo" href="https://www.w3.org/"> <img alt="W3C" height="48" src="https://www.w3.org/StyleSheets/TR/2016/logos/W3C" width="72"> </a> </p>
    <h1 class="p-name no-ref" id="title">Ambient Light Sensor</h1>
-   <h2 class="no-num no-toc no-ref heading settled" id="subtitle"><span class="content">Editor’s Draft, <time class="dt-updated" datetime="2017-08-18">18 August 2017</time></span></h2>
+   <h2 class="no-num no-toc no-ref heading settled" id="subtitle"><span class="content">Editor’s Draft, <time class="dt-updated" datetime="2017-08-21">21 August 2017</time></span></h2>
    <div data-fill-with="spec-metadata">
     <dl>
      <dt>This version:
@@ -1493,7 +1493,11 @@ <h2 class="no-num no-toc no-ref heading settled" id="sotd"><span class="content"
   <nav data-fill-with="table-of-contents" id="toc">
    <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
    <ol class="toc" role="directory">
-    <li><a href="#intro"><span class="secno">1</span> <span class="content">Introduction</span></a>
+    <li>
+     <a href="#intro"><span class="secno">1</span> <span class="content">Introduction</span></a>
+     <ol class="toc">
+      <li><a href="#scope"><span class="secno">1.1</span> <span class="content">Scope</span></a>
+     </ol>
     <li><a href="#examples"><span class="secno">2</span> <span class="content">Examples</span></a>
     <li><a href="#security-and-privacy"><span class="secno">3</span> <span class="content">Security and Privacy Considerations</span></a>
     <li><a href="#model"><span class="secno">4</span> <span class="content">Model</span></a>
@@ -1528,6 +1532,10 @@ <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
    <h2 class="heading settled" data-level="1" id="intro"><span class="secno">1. </span><span class="content">Introduction</span><a class="self-link" href="#intro"></a></h2>
    <p>The Ambient Light Sensor extends the Generic Sensor API <a data-link-type="biblio" href="#biblio-generic-sensor">[GENERIC-SENSOR]</a> to provide information about ambient light levels,
 as detected by the device’s main light detector, in terms of lux units.</p>
+   <h3 class="heading settled" data-level="1.1" id="scope"><span class="secno">1.1. </span><span class="content">Scope</span><a class="self-link" href="#scope"></a></h3>
+   <p>For document styling use cases that do not require accuracy, low latency, and high frequency,
+the <code>light-level</code> CSS media feature <span>[MEDIAQUERIES-5]</span> can be more appropriate. The <code>light-level</code> media feature has a set of pre-defined values that represents a composite of screen brightness,
+screen technology, ambient light level, and possibly other factors depending on implementation.</p>
    <p class="note" role="note"><span>Note:</span> it might be worthwhile to provide a <a data-link-type="dfn" href="https://w3c.github.io/sensors#high-level" id="ref-for-high-level">high-level</a> Light Level Sensor
 which would mirror the <code>light-level</code> media feature, but in JavaScript.
 This sensor would <em>not require additional user permission to be activated</em> in user agents that exposed the <code>light-level</code> media feature.</p>
@@ -1610,9 +1618,6 @@ <h2 class="heading settled" data-level="6" id="usecases-requirements"><span clas
    <p>While some of the use cases may benefit from obtaining precise ambient light measurements, the use
 cases that convert ambient light level fluctuations to user input events, would benefit from
 higher <a data-link-type="dfn" href="https://w3c.github.io/sensors#sampling-frequency" id="ref-for-sampling-frequency">sampling frequencies</a>.</p>
-   <p class="note" role="note"><span>Note:</span> For document styling use cases that do not require accuracy, low latency, and high frequency,
-the <code>light-level</code> CSS media feature <a data-link-type="biblio" href="#biblio-mediaqueries-4">[MEDIAQUERIES-4]</a> can be more appropriate. The <code>light-level</code> media feature has a set of pre-defined values that represents a composite of screen brightness,
-screen technology, ambient light level, and possibly other factors depending on implementation.</p>
    <h2 class="heading settled" data-level="7" id="acknowledgements"><span class="secno">7. </span><span class="content">Acknowledgements</span><a class="self-link" href="#acknowledgements"></a></h2>
    <p>Doug Turner for the initial prototype and
 Marcos Caceres for the test suite.</p>
@@ -1694,8 +1699,6 @@ <h3 class="no-num no-ref heading settled" id="normative"><span class="content">N
   </dl>
   <h3 class="no-num no-ref heading settled" id="informative"><span class="content">Informative References</span><a class="self-link" href="#informative"></a></h3>
   <dl>
-   <dt id="biblio-mediaqueries-4">[MEDIAQUERIES-4]
-   <dd>Florian Rivoal; Tab Atkins Jr.. <a href="https://drafts.csswg.org/mediaqueries-4/">Media Queries Level 4</a>. URL: <a href="https://drafts.csswg.org/mediaqueries-4/">https://drafts.csswg.org/mediaqueries-4/</a>
    <dt id="biblio-si">[SI]
    <dd><a href="http://www.bipm.org/en/publications/si-brochure/">SI Brochure: The International System of Units (SI), 8th edition</a>. 2014. URL: <a href="http://www.bipm.org/en/publications/si-brochure/">http://www.bipm.org/en/publications/si-brochure/</a>
   </dl>