- Introduced a comprehensive guide detailing the structure and interpretation of _XRef.xml files.
- Explained key XML elements necessary for constructing call trees, including SourceObject, ReferenceObject, and Location.
- Provided a step-by-step data extraction strategy for identifying caller-callee relationships.
- Included example Python code for parsing XML and aggregating call relationships.
- Addressed considerations for handling multiple files and variations across TIA Portal versions.
