@b4n
U-CTags has support for custom fields like where a symbol end, so this should be used instead of emitting 2 tags (but Geany doesn't support it yet).
I was meant only to the initial, opening, tag ```#Region```, I think that's enough (and lexer support folding). I have not decided yet definitely: it's harder because custom field. And I don't know yet how to name the item: lexer and man uses "Special", maybe "Region" will be more understandable.