(C) 2018 Masaryk University -- Tomáš Pitner, Luděk Bártek, Adam Rambousek
Schema language based on patterns instead of grammar
Suitable for more "relaxed" markups, where it is enough to specify the schema only "roughly" by setting some rules, not exact grammar exhaustively
Examplotron was an experiment to define markup model by just giving example(s) of valid document(s)
The "example document" is converted to a RelaxNG schema and then the normal RelaxNG validation can be done.
Not widely used but simple to use with no major ostacles.