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Reserve the "u" namespace #688

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Merged
merged 2 commits into from
Feb 23, 2024
Merged

Reserve the "u" namespace #688

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0f79563
Reserve the "u" namespace
eemeli Feb 23, 2024
9e58bd7
Update spec/syntax.md
eemeli Feb 23, 2024
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3 changes: 3 additions & 0 deletions spec/syntax.md
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Expand Up @@ -831,6 +831,9 @@ When present, the _namespace_ is separated from the _name_ by a
U+003A COLON `:`.
Built-in _functions_ and their _options_ do not have a _namespace_ identifier.

The _namespace_ `u` (U+0075 LATIN SMALL LETTER U)
is reserved for future standardization.

_Function_ _identifiers_ are prefixed with `:`.
_Markup_ _identifiers_ are prefixed with `#` or `/`.
_Option_ _identifiers_ have no prefix.
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