-let create ~dictionary_uri ~mml_uri ~tml_uri ~log =
- I_mathml_editor.create dictionary_uri mml_uri tml_uri log
+let create ?(alt_lexer=false) ~dictionary_uri ~mml_uri ~tml_uri ~log =
+ I_mathml_editor.create ~alt_lexer ~dictionary_uri ~mml_uri ~tml_uri ~log