How to add Ogg Skeleton 4 to an Ogg Theora file with oggz

Question

The man page for oggz reads:

[Oggz] can read and write Ogg Skeleton logical bitstreams.

I have attempted the following:

oggz-merge -o test-out.ogv test-in.theo.ogv
oggz-sort -o test-out.ogv test-in.theo.ogv

Both of them write a new Ogg video file with all the streams intact, but I do not see a Skeleton track being added. I have checked man pages, and cannot find anything akin to addskel of hogg.

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I have now also tried ripping the tracks (I have 3) with:

oggz-rip -o test-out.ogv -i 0 -i 1 -i 2 test-in.theo.ogv

This has not created a skeleton track either.