What does the A in ~A in format stand for?

Question

With format you can use, among other things, ~S and ~A.

While the S in ~S is for S-expression, what does the A in ~A stand for? Apparently it outputs without escaping, but I was wondering what the letter actually means…?

Answer 1

It stands for Aesthetic. A-formatted output is not escaped. See http://www.lispworks.com/documentation/HyperSpec/Body/22_cda.htm

Incidentally, S stands for Standard rather than S-expression.