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[css-env-1] Correct note to use pem not em #12855

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[css-env-1] Correct note to use pem not em #12855

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2 changes: 1 addition & 1 deletion css-env-1/Overview.bs
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Expand Up @@ -253,7 +253,7 @@ would cause text sizes to double,
then ''env(preferred-text-scale)'' would resolve to ''2''.

Note: The ''pem'' unit represents this same information;
''1em'' is exactly equivalent to ''calc(1em * env(preferred-text-scale))''.
''1pem'' is exactly equivalent to ''calc(1em * env(preferred-text-scale))''.
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I think this is a simple typo right? Unless I'm massively misunderstanding.

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Yeah this is a simple typo or copy-pasta

When directly sizing things, ''bsem'' is just a more convenient length to use.
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Is bsem defined anywhere? I can't seem to find it?


<div class=example>
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