Name Protection in Block Structured Programming Languages
Nai-Ting Hsu, Charles Fischer
Wulf and Shaw  have mentioned four deficiencies of Algol-like name scope rules (side effects, indiscriminant access, vulnerability, and no overlapping definition). In this paper a method is proposed to remedy these four deficiencies. This method can also be used to solve part of the confinement problem  in system protection at the programming language level. A method which provides for user defined access primitives is also proposed.
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