Many thanks to Beneroth for clearing the air on utility of encryption. It restores my faith in basic text source code.
As an engineer and practical scientist, concerned not with number crunching speed but with teaching elegant and useful programming language such as Lisp to students and subordinates, I still would be happier with a 'somewhat' greater degree of security from tampering, as afforded for example by bytecode files, in particular usecases such as automatic test equipment setup for reliability of measured data. Can that be achieved in any way within picoLisp? BR, SJain