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TTML Named Item Registry


The ttm:item element can be used to express arbitrary metadata that applies to a parent element.

This page provides a registry for <item-name> values in order to promote interoperability.

Standard TTML Item Names

The above values are standard values, defined by TTML2 unqualified by a namespace. Note that all other values unqualified by a namespace are reserved for standardization.

Custom TTML Roles

Any future item name values will be added to this registry below.

There are currently no additional values in this registry.