A quick update about pLisp: the full monty compiler is done, I'm in the process of updating the documentation (online help [i.e. within pLisp instead of taking the user to the language reference HTML] and autocomplete). I am also tempted to add a 'references' feature which will show the list of all the code that refers to a particular top-level symbol; this is not to difficult to implement, though there may be some false positives because of lexical variables with the same name).