Debugging programs (assemby) is sooooo much easier under mp/m then cp/m! Wow.
Text editor with source in window 1. Below it, TYPE displaying the listing in window 3. And SID (symbolic debugger) in 4.
SID (and ZSID but I prefer Intel z80 mnemonics) is not bad at all. Debugging with a symbol table seems luxurious.
One window unused.
Problems: I need a LESS program to display the listing, TYPE is barbaric.