grammar WFN
rule wfn 'wfn:[' space (attr (space ',' space attr)*)? space ']' end rule attr symbol space '=' space value end rule symbol [a-zA-Z0-9_]* end rule escaped '\\' . end rule content (escaped | /[^"]/)* end rule string '"' content '"' end rule value string | symbol end rule space [ \t]* end
end