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......))) Now (barring syntax errors I may have slipped in the above pseudo-example (my Lisp is rusty)), foo and quux are known in the main environment, can both call bar and gee, which are not visible. Lisp also allows me to do a similar thing for "data" (with let()) and even macroes (with macrolet()). Variants such as let*() allow, IIRC, to play tricks with evaluation order (e. g. mutually calling "local" functions). I am aware that one may achieve the same thing in R by creating a package with its own namespace and exporting relevant items.However, in my case, that would be tryin...