The TIA Portal project data is accessed using the openness. However, it is important to note that the object model used for the templates differs from the native TIA Portal Openness object model. This modification is done to simplify the access of relevant objects within template definition.
NOTE : [openness attributes] indicates the ability to access further properties that are available via openness. TIP : you can use TIA Portal Openness Explorer to find out what attributes are available.