Super rough draft pass at a grammar for Fountain, for discussion purposes only

fountain.bnf

<GT>             :: = '>'
<capchar>        ::= 'A' | 'B' | .... | 'Z'
<lowerchar>      ::= 'a' | 'b' | .... | 'z'
<punc>           ::= '.' | ',' | ....
<WS>             ::= ' ' | <TAB>
<TO>             ::= 'TO:'
<DOT>            ::= '.'
<LP>             ::= '('
<RP>             ::= ')'
<intext>         ::= 'INT' | 'EXT' | 'INT/EXT'
<daynight>       ::= 'DAY' | 'NIGHT'
<stringchar>     ::= <capchar> | <lowerchar> | <WS> | <punc>
<capstringchar>  ::= <capchar> | <WS> | <punc>
<string>         ::= <stringchar>+
<capstring>      ::= <capstringchar>+
<line>           ::= <string> <EOL>
<blank-line>     ::= [<WS>] <EOL>
<document>       ::= [<title-page>] <scene>+
<scene>          ::= <scene-heading> <block>+
<scene-heading>  ::= <DOT> <capstring> | <intext> <DOT> <capstring> <daynight>
<block>          ::= (<transition> | <dialogue-block> | <action>) <blank-line>
<transition>     ::= ( <GT> <text> | <text> <TO> ) <EOL>
<dialogue-group> ::= <dialogue-part>+
<dialogue-part>  ::= <character> | <parenthetical> | <dialogue>
<character>      ::= <capstring> <EOL>
<parenthetical>  ::= <LP> <string> <RP> <EOL>
<dialogue>       ::= <string> <EOL>
<action>         ::= <line>+