The document discusses a semantic approach to verifying activity diagrams using a domain-specific language (Action Description Language or ADL) to address common issues in UML diagrams, such as inconsistencies and misinterpretations. It outlines a research methodology that includes standardizing XMI-formatted diagrams, generating ADL scripts, and verifying them against UML specifications to ensure higher quality designs. Future plans involve expanding the program's capabilities, including integrating with the Eclipse Modeling Framework and automating document generation.