Hi Scott (and all), I'm thinking of going with: #+allegro (format nil "~A~A~A~A" excl::*common-lisp-version-number* ; ANSI vs MoDeRn ;; thanks to Robert Goldman and Charley Cox for ;; an improvement to my hack (if (eq excl:*current-case-mode* :case-sensitive-lower) "M" "A") ;; Note if using International ACL ;; see http://www.franz.com/support/documentation/8.1/doc/operators/excl/ics-target... (excl:ics-target-case (:-ics "8") (:+ics "X")) (if (member :64bit *features*) "-64bit" "")) Is there any dissent? -- Gary Warren King, metabang.com Cell: (413) 559 8738 Fax: (206) 338-4052 gwkkwg on Skype * garethsan on AIM * gwking on twitter