Willi and I are writing the
The Shen Standard Library. This is mainly Willi at the moment, though I have contributed the introductory material on atoms and sequences. He is currently writing up the revised maths library. Final length will be somewhere in the region of 150-200 pages perhaps. The text gets passed back and forth between us.
I've been rather involved in getting a book to the publisher, hence my period of quiet. I'm returning to SP this month.
Mark