new$hash:?myhash
& (myhash..insert)$(title."Some title")
& (myhash..insert)$(formula.a+b+x^7)
& (myhash..insert)$(fruit.apples oranges kiwis)
& (myhash..insert)$(meat.)
& (myhash..insert)$(fruit.melons bananas)
& out$(myhash..find)$fruit
& (myhash..remove)$formula
& (myhash..insert)$(formula.x^2+y^2)
& out$(myhash..find)$formula;