jimblandy/DebuggerDocs — comment on commit 75959ca93eaa23c25f610e519116fc9f8d5ddc31
File: protocol line 620
By jimblandy:

Yes, the only difference between sending the youngest frame a "pop" and sending a thread a "resume" with a "forceCompletion" is that the former doesn't resume execution, and the latter does. I'll try to clarify this, and also allow "pop" to provide a completion value, not just a return value.