> Even though (let (x 5) (* x x)) is wrong, it parses. That's not the definition of syntax. If you're implementing a compiler, then you might use "syntax" as

> Even though (let (x 5) (* x x)) is wrong, it parses. That's not the definition of syntax. If you're implementing a compiler, then you might use "syntax" as a shorthand for those parts of the syntax that are processed in a particular "syntax checking" stage of the compiler. But that's not all it is. > From looking at the use, I don't know whether it is valid shape for f That, on the other hand, is close to a definition of syntax: The rules for what has a valid shape and what doesn't.