Quote: a NewtonScript frame is a collection of tagged slots; slots can contain references to objects, frames, and functions

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Objects called frames are the basis of object- … a value. Slots can contain references to other … slot tags '_proto' and '_parent' are present in … [of another frame's slots]; '_parent' is used for container inheritance. [Changing a '_parent's slot changes that slot instead of creating a new one.] … [p. 70] ['_proto' inheritance allows ROM storage.] "RAM is used only for the …   Google-1   Google-2

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Quote: NewtonScript supports read-only, prototype inheritance of another frame's slots and shared, container inheritance

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