(PRINTVMEM) 	print out information about what pages are swapped in
i(INCOREP fn)	is function swapped in? (for compiled code only).
		e.g., (MAPATOMS (FUNCTION (LAMBDA (X)(AND (INCOREP X)(PRINT X].

Rather rough data returned (e.g., running these functions can cause
some swapping), but can be interesting in tracking working-set problems.