Hi: I am not a programmer. Have some understanding of scheme. I have a question that I cannot find the answer to on the net. I joined this group to ask if someone would help me find the answer. I am looking for a manual or whatever that will explain in detail how an alist is stored in memory and how it works at this level. Also, how assq and assq-ref work, what is past to the alist at the same level. Also, the source code would be good. Thank you, ƒg