It would be helpful if I could use the brk opcode and stella would open the debugger at that point. I tried putting a brk opcode in my code but nothing happens. If I press the ` key. then the debugger window appears but the program counter is not on the brk line or anywhere close to it. I tried the stella break command but it rejects labels and says it requires an address. the documentation I read implies you can use labels for break.