When the Tags tab applies
to a metaclass, it hosts all the tag definitions that are available
to all instances of a certain type (anywhere within the model), without
the need to set a stereotype.
When you define a tag at
the metaclass level, the Applicable to field
is read-write so you can select the appropriate element type from
the list.
About this task
For example, you could create a tag to
specify prerequisite attributes for all primitive operations in the
project by selecting the Primitive Operation element
from the Applicable to list. This tag will
be included automatically in the Tags tab of
any primitive operation in the project as <ProfileName>::<ElementType::<TagName>.