tests/modbus/modbus_0@modbus/ModbusTCPclient_0@ModbusTCPclient/ModbusRequest_0@ModbusRequest/confnode.xml
SVGHMI: widgets are not anymore binary relative or absolute, but have a "relativeness".
Because of allowing multiple variables per widget, we must distinguish if individual variables is relative to page, not the whole widget.
<?xml version='1.0' encoding='utf-8'?>
<ModbusRequest xmlns:xsd="http://www.w3.org/2001/XMLSchema" Function="16 - Write Multiple Registers" SlaveID="0"/>