b=isExternalM2Parent()This function indicates whether the currently-running process is a parent process, or not, from the point-of-view of the RunExternalM2 package.
The object isExternalM2Parent is a function closure.
The source of this document is in /__w/M2/M2/macaulay2-1.26.05+ds/M2/Macaulay2/packages/RunExternalM2.m2:894:0.