[MEI-L] Thin brackets in orchestral scores

[TW]

Laurent's post made me wonder whether we might be missing an
additional value for staffGrp/@symbol for the thin bracket that is
used for sub-groups in orchestral scores[1].  Looking at some PDFs in
the sample collection I didn't see anything like that (I didn't look
through all of them).

Thomas


[1] see e.g. http://notengrafik.com/pdf/examples/Tchaikovsky.pdf