[tan06]
All idrefs in an attribute must be unique.
Affects: @who @ed-who @roles @src @lexicon @morphology @reuse-type @bitext-relation @feature @include
@who
@ed-who
@roles
@src
@lexicon
@morphology
@reuse-type
@bitext-relation
@feature
@include
Used by template ŧ core-expansion-terse-attributes
ŧ core-expansion-terse-attributes