treevariable -list [glob-name-pattern]
treevariable -set name value [units-of-measure]
treevariable -check name
treevariable -setchanged name
treevariable -firetraces [glob-pattern]
This command is wrapped in a CMPITclCommandAll.
Tree variables, in practice, steer computations in the event processing
pipeline. Furthermore, it is typically the event processing pipeline
elements that construct a treevariable. Therfore, if the rank of the
process is less than MPI_FIRST_WORKER_RANK the command
simply returns TCL_OK and no result.