-SimGrid supports the use of plugins; currently, no known plugins
-can be activated but there are use-cases where you may want to write
-your own plugin (for instance, for logging).
+SimGrid plugins allow to extend the framework without changing its
+source code directly. Read the source code of the existing plugins to
+learn how to do so (in ``src/plugins``), and ask your questions to the
+usual channels (Stack Overflow, Mailing list, IRC). The basic idea is
+that plugins usually register callbacks to some signals of interest.
+If they need to store some information about a given object (Link, CPU
+or Actor), they do so through the use of a dedicated object extension.