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1.4.3 Resolution of Names
When a program, program B, is directly contained within another program, program A, both programs can define a condition-name, a data-name, a file-name, or a record-name using the same user-defined word. When such a duplicated name is referenced in program B, the following steps determine
X the referenced resource (note, these rules also apply to classes and
X contained methods):
  1. The referenced resource is identified from the set of all names which are defined in program B and all global names defined in program A and in any programs which directly or indirectly contain program A. Using this set of names, the normal rules for qualification and any other rules for uniqueness of reference are applied until one or more resource is identified.
  2. If only one resource is identified, it is the referenced resource.
  3. If more than one resource is identified, no more than one of them can have a name local to program B. If zero or one of the resources has a name local to program B, the following applies:
    • If the name is declared in program B, the resource in program B is the referenced resource.
    • If the name is not declared in program B, the referenced resource is:
      • The resource in program A if the name is declared in program A.
      • The resource in the containing program if the name is declared in the program containing program A.
      This rule is applied to further containing programs until a valid resource is found.

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