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Rephrase cLLi chunk description (#416)
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@@ -544,7 +544,7 @@ <h2 id="3Defsandabbrevs">Terms, definitions, and abbreviated terms</h2>
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</dt>
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<dd>
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an objective measurement of the visible light intensity, taking into account the sensitivity of the human eye to different wavelengths.
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an objective measurement of the visible light intensity, taking into account the sensitivity of the human eye to different wavelengths.
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<p class="note">Luminance and <a>chromaticity</a> together fully define a perceived colour. See <a href="https://colorusage.arc.nasa.gov/lum_and_chrom.php">Luminance and Chromaticity</a>
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or, for a formal definition [[COLORIMETRY]].</p>
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on a comparison of its inherent capabilities versus the original mastering display's capabilites.</p>
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<p>mDCv is typically used with the <a>PQ</a> [[ITU-R-BT.2100]] transfer function
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and additional <a href="#cLLi-chunk">cLLI</a> metadata and is commonly then called <a>HDR10</a> (PQ with ST 2086 static metadata).
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The mDCv chunk may also be included with <a>HLG</a> [[ITU-R-BT.2100]] and <a>SDR</a> image formats (for example
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and additional <a href="#cLLi-chunk">cLLI</a> metadata and is commonly then called <a>HDR10</a> (PQ with ST 2086 static metadata).
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The mDCv chunk may also be included with <a>HLG</a> [[ITU-R-BT.2100]] and <a>SDR</a> image formats (for example
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[[ITU-R-BT.709]]). </p>
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<p>Since mDCv was originally created as supplemental static metadata meant to
@@ -4068,13 +4068,13 @@ <h2><span class="chunk">cLLi</span> Content Light Level Information</h2>
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</pre>
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<p>If present, the <span class="chunk">cLLi</span> chunk identifies two characteristics of <a>HDR</a> content:</p>
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<p>The <span class="chunk">cLLi</span> chunk adds static metadata which provides an opportunity
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<p>If present, the <span class="chunk">cLLi</span> chunk adds static metadata for <a>HDR</a> content, which provides an opportunity
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to optimize tone mapping of the associated content for a target display. This is
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accomplished by tailoring the tone mapping of the content itself to the specific peak brightness
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capabilities of the target display to prevent clipping. This is most important for HDR image formats that use absolute
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brightness values, such as <a>PQ</a>[ITU-R-BT.2100]. It may also be used with other image formats. </p>
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brightness values, such as <a>PQ</a> [ITU-R-BT.2100]. It may also be used with other image formats.</p>
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<p>The <span class="chunk">cLLi</span> chunk describes two characteristics of <a>HDR</a> content:</p>
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<p>MaxFALL (Maximum Frame Average Light Level) uses a static metadata value to indicate the
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maximum value of the <a>frame</a> average light level (in cd/m<sup>2</sup>, also known as nits)

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