Uses Ace editor ( set to coffee for highlighting ).

caveat :

not this:

rulenamee 
  ::= blahblah
  | blahtwo
  | blahthree

fix it to this:

rulenamee ::= blahblah | blahtwo | blahthree

rules each on one line (sorry, lazy)

cmd line:

streamlit run ebnf_visualizer.py