ITK Release 4/Users Migration Guide/Migration Guide XML Format

The goal of the migration guide XML documents is to encode all information about changes to the ITK API between the v3.X releases and v4.0. Each migration document consists of a single <Change> element and a set of associated child elements. The <Change> element has a set of required child elements and a set of additional optional child elements which can be used to automatically identify locations in user code where the API change will mandate updates. In the case of simple changes, these rules can be used to automatically fix user code with the migration tool.