beremiz

ToolChain: add IEC library include paths to CFLAGS when building C code from extensions.
Widget syntax
=============
.. highlight:: text
HMI elements are SVG elements whose labels start with ``HMI:``::
HMI:WidgetType[|freq][[:param]...][[@a=path[,min][,max]]...][#expression]
Widget Type
-----------
Update Frequency
----------------
Parameters
----------
Variable bindings
-----------------
Enable expression
-----------------