set of tools (based on XTEXT) to deal with EBNF (checking, visualizing, analysing, pretty printing)
https://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_form
the workbench provides and edito for EBNF files according to the standard:
http://www.iso.org/iso/catalogue_detail?csnumber=26153
analyzer visaulizer