The application includes an XML catalog with DTDs and XML Schemas for DITA and related document types.

A custom XML catalog can be selected for parsing custom DITA files if needed.

Select XML Catalog in Settings menu or click the XML Catalog button on the toolbar to change the default catalog used by KeysAnalyzer. On Mac OS X you can also select Preferences in Apple menu.

Use the Browse... button to select a different catalog from the file system. Click the Save Settings button to store and activate your preferences.