Editing Metasyntax (section)

===Variations===
The metasyntax convention of these formal metalanguages are not yet formalized. Many metasyntactic variations or extensions exist in the reference manual of various computer programming languages. One variation to the standard convention for denoting nonterminals and terminals is to remove metasymbols such as angle brackets and quotations and apply ''font types'' to the intended words. In [[Ada (programming language)|Ada]], for example, syntactic categories are denoted by applying lower case [[sans-serif font]] on the intended words or symbols. All terminal words or symbols, in Ada, consist of characters of code position between {{mono|16#20#}} and {{mono|16#7E#}} (inclusive). The definition for each character set is referred to the International Standard described by [[ISO/IEC]] 10646:2003. In [[C (programming language)|C]] and [[Java (programming language)|Java]], syntactic categories are denoted using [[italic font]] while terminal symbols are denoted by [[sans-serif|gothic]] font. In [[J (programming language)|J]], its metasyntax does not apply metasymbols to describe J's syntax at all. Rather, all syntactic explanations are done in a metalanguage very similar to English called Dictionary, which is uniquely documented for J.