GDL Whitespace Characters
Whitespace characters are defined to be space, tab, or a continuation linebreak. A continuation linebreak is a linebreak sequence immediately followed by the plus sign (+). (A linebreak sequence is "\n\r", "\r\n", "\n", or "\r" expressed as C-strings.)
Whitespace is interpreted literally within a quoted string and within an arbitrary value context. Whitespace that occurs elsewhere is considered non-literal. The GDL parser consolidates non-literal whitespace; that is, any number of consecutive non-literal whitespace characters is replaced by one whitespace character. Literal whitespace is not consolidated.