        "\"ac\" [EBNF rule=\"a\" \"b\"? \"c\" EBNF] ."
        "V{ \"a\" f \"c\" }"
     }
-} 
+}
 ;
 
 ARTICLE: "peg.ebnf.character-class" "Character Class"

"from the input string. The AST result is the vector of the AST results from "
"the matched rule."
{ $examples
    { $example 
       "USING: prettyprint peg.ebnf ;"
       "\"aab\" [EBNF rule=\"a\"+ \"b\" EBNF] ."
       "V{ V{ \"a\" \"a\" } \"b\" }"
    }
} 
;

ARTICLE: "peg.ebnf.zero-or-more" "Zero or more"

       "\"2\" [EBNF rule=[0-9] ?[ digit> odd? ]? EBNF] ."
       "Sequence index out of bounds\nindex 0\nseq   V{ }"
    }
}
;

ARTICLE: "peg.ebnf.variable" "Variable"
