Regarding EMU PRO — in version: New EMU PRO software version 219.0 beta, we added complete documentation of the CAN stream to the built-in help.
You can also find it in the device manual here: https://www.ecumaster.com/files/EMU_PRO/EMU_PRO_Manual.pdf
As for the V3 CAN stream for EMU Black — that will be added to the built-in help soon. I’ll keep you updated.
Best regards,
Michał