Since revision 4.0.0:
  - The attribute management has been modified.
     The methods read_attr(Tango::Attribute &attr) and
     write_attr_hardware(vector<long> &attr_list)
     do not exist any more.
     A read method is generated for each attribute.
     A write method is generated for each writable attribute.

  - A new file is genarated with state machine methods.

  - If a device property is not found in database,
     the property value will be taken from class property if exists.

  - A description editor has been added.

  - Item could be sorted in alphabetic order.




see: http://www.esrf.fr/tango/tango_doc/tools_doc/pogo_doc/

