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Change anchor for high-dpi devices to pixel #713

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Nov 16, 2016
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Change anchor for high-dpi devices to pixel #713

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Change anchor for high-dpi devices to pixel 
Make the spec match reality, as most (all?) high-dpi screen devices
currently also anchor on pixel unit, and not any physical unit.
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@patrickhlauke
patrickhlauke committed Nov 15, 2016
commit 15cddda7030d7e3f36beb63aa7287431d22d77de
6 changes: 3 additions & 3 deletions css-values/Overview.bs
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Expand Up @@ -1133,10 +1133,10 @@ Absolute lengths: the ''cm'', ''mm'', ''q'', ''in'', ''pt'', ''pc'', ''px'' unit
<li>by relating the <a value>pixel unit</a> to the <a>reference pixel</a>.
</ol>

For print media and similar high-resolution devices,
For print media,
the anchor unit should be one of the standard physical units (inches, centimeters, etc).
For lower-resolution devices,
and devices with unusual viewing distances,
For screen media (including high-resolution devices, lower-resolution devices,
and devices with unusual viewing distances),
it is recommended instead that the anchor unit be the pixel unit.
For such devices it is recommended that the pixel unit
refer to the whole number of device pixels that best approximates the reference pixel.
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