PowerCL Revision "4J" is released, and available at TOS and the 41CL website - http://systemyde.com/pdf/POWERCL_B4J_Manual.pdf
Adds a few more functions re. I/O Bus information and page details; plus two new function launchers, IOBUS and CHR$ - conveniently grouping a bunch of sub-functions from the auxiliary banks.
This will probably be the last one on the current "generation" of YFNS platform, make sure you get your own copy - the future is unwritten...
Cheers,
ÁM.