USER>write $piece("slice of cheese pizza", " ", 1, 2)
slice of
USER>write $piece("slice of cheese pizza", " ", *-1, *)
cheese pizza
USER>write $piece("slice of cheese pizza", "i", 2)
ce of cheese p
USER>write $piece("slice of cheese pizza", "z", 2)
USER>set city = $piece("One Memorial Drive^Cambridge^MA^02142", "^", 2)
USER>write city
Cambridge
USER>write $length("slice of cheese pizza", " ")
4
USER>