study on your :ref:`simulated platform <platform>`, i.e. to specify which actor
should be started on which host. You can do so directly in your program (as
shown in :ref:`these examples <s4u_ex_actors>`), or using an XML deployment
-file. Unless you have a good reason, you should keep your application apart
+file. Either way, it is a good habit to keep your application apart
from the deployment as it will :ref:`ease your experimental campaign afterward
<howto_science>`.
