Things to mention:
 
-*: condor_hold actually kills the DAGMan process; condor_release starts a new process (but the same Condor ID)
+*: condor_hold actually kills the DAGMan process; condor_release starts a new process (but the same HTCondor ID)
 *: lock file (including Joe's Unique PID thing)
 *: re-reading node job userlogs
 *: FD problems on wide DAGs (throttles don't help us in recovery mode)