+ - <b>User-defined properties</b>.
+ @ref examples/s4u/platform-properties/s4u-platform-properties.cpp and
+ @ref examples/s4u/platform-properties/s4u-platform-properties_d.xml and
+ @ref examples/platforms/prop.xml \n
+ You can attach arbitrary information to most platform elements from
+ the XML file, and then interact with these values from your
+ program. Note that the changes are not written into the XML file: they
+ will only last until the end of your simulation.
+ - simgrid::s4u::Actor::getProperty() and simgrid::s4u::Actor::setProperty()
+ - simgrid::s4u::Host::getProperty() and simgrid::s4u::Host::setProperty()
+ - simgrid::s4u::Link::getProperty() and simgrid::s4u::Link::setProperty()
+ - simgrid::s4u::NetZone::getProperty() and simgrid::s4u::NetZone::setProperty()
+
+@section s4u_ex_io Simulating disks and files