range attribute vs restriction element

[robUx4]

Following the 2021-05-25 IETF meeting, we discussed the issue of elements that have a range attribute but also have a restriction element.

In Matroska there are elements like TrackEntry\TrackType TrackEntry\Video\FieldOrder that have both elements and some missing values in the possible range. It seems when there is a restriction element set, the range value is redundant and confusing. We should make them mutually exclusive.

[hubblec4]

Yes, if a restriction is present then is no reason to have a range attribute, because the restriction is more precise.