Hi, the new xmlfile() API is still undocumented and I'd like to have a doc section on it before releasing 3.1. Would anyone have the time to write one up? It should go after the "serialisation" section in doc/api.txt. The tests provide several usage examples. https://github.com/lxml/lxml/blob/master/src/lxml/tests/test_incremental_xml... Thanks for any help, Stefan