-It is possible to use a packet-level network simulator
-instead of the default flow-based simulation. You may want to use such
-an approach if you have doubts about the validity of the default model
-or if you want to perform some validation experiments. At the moment,
-we support the NS3 simulator; see Section \ref pls_examples "Examples" for
-some additional information.
+It is possible to use a packet-level network simulator instead of the default flow-based models. You may want to use
+this feature if you have doubts about the validity of the default model or want to perform some validation experiments.