[This is preliminary documentation and subject to change.]
If no down arrow appears, type the new value in the field.
Click the I, C, and O fields to select or cancel these settings.
The Origin field is read-only. It indicates where the qualifier originated: local (for qualifiers defined in the current object) or propagated (for qualifiers propagated from another object).
When you start typing, the text turns blue. This indicates that the value has not been committed yet.