#print How many spelling mistakes are there in the file "Ref", according to "spell"? Type "answer N", where N is the number you decide on. #create Ref Bianchi Blue Feldman McIlroy Roome Rosin Rosler Aho Bourne Dvorak Haley Harris Holt Johnson Mashey Mitze Muha Nelson Pinson Plauger Spivack Thompson Weinberger Lesk Ossanna # spell Ref | %s/../lcount >X2 & #copyin #user #uncopyin tail -1 .copy >X1 #cmp X2 X1 #log #next 3.1c 10