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+Project overview
+================
+
+In order to target the widest possible range of programmable devices and keep efficient, Beremiz use C code as an intermediate language. 
+
+To be executed, C needs to be compiled. `GCC <http://gcc.gnu.org>`_ serve that purpose perfectly.
+
+PLC program is expressed in languages defined in IEC-61131, including graphical languages. Thanks to PLCopen TC2, those graphical languages have a standardised representation, in XML.
+
+To be continued.