+styled ::= "__" text "__" => ul
+ | "((" text "))" => footnote
+ | ( "[[" text "]]" => tt
+ > "[" word "]" => citation
+ )
+ | "!!" text "!!" => strikethrough
+ | "^^" (word|block) => superscript
+ | ",," (word|block) => subscript
+ | "\\sc" block => smallcap
+ | "**" text "**" => bold
+ | "!" (word|block) => keyword
+ > "*" text "*" => it
+
+block ::= { text }
+structured ::= { text } "->" (url|email) => link
+ //> alphanum++ "->" (url|email) => link
+structuredx ::= glyph
+ > email
+ > url
+
+glyph ::= "(r)" | "(c)" | "(tm)" | "--" // euro symbol?
+ | "\\today" -> ~[a-z] => today