| Workflow-wide node categories | no | *yes* | |
 | Node priorities on sub-workflows | *yes* | no | |
 | Reduce memory footprint of large workflows | *yes?* | no | If used properly |
-| Per-sub-workflow file final nodes | yes | no | |
-| Abort sub-workflows individually | yes | no | |
-| Variables associated with sub-workflows | yes | no | |
+| Per-sub-workflow file final nodes | *yes* | no | |
+| Abort sub-workflows individually | *yes* | no | |
+| Variables associated with sub-workflows | *yes* | no | |
 | Separate configuration for sub-workflows | yes | no | Can be good or bad |
-| One node status file, etc., for entire workflow | no | yes | |
+| One node status file, etc., for entire workflow | no | *yes* | |
 
 *When should I use one of these features?*
 
@@ -40,3 +40,7 @@
 The simple answer is that, unless you need one of the features that's
 available with external sub-DAGs but not with splices, you should use splices.
 Splices are generally simpler... (add more stuff here)
+
+*How to use external sub-DAGs to reduce workflow memory footprint*
+
+(add stuff here)