Raw strings are a lexical syntax for strings that do not interpret escapes inside of them and are useful in cases where the string data has a lot of characters such as \ or " that would otherwise have to be escaped. This SRFI proposes a raw string syntax that allows for a customized delimiter to enclose the character data. Importantly, for any string, there exists a delimiter such that the raw string using that delimiter can represent the string verbatim. The raw strings in this SRFI do not do any special whitespace handling.