In nlist, dummy arguments and functions are not permitted.
Subscripts of array elements must be integer constants greater than the lower bound and less than or equal to the upper bound.
EQUIVALENCE can associate automatic variables only with other automatic variables or undefined storage classes. These classes must be ones which are not in any of the COMMON, STATIC, SAVE, DATA, or dummy arguments.
An EQUIVALENCE statement can associate an element of type character with a noncharacter element. @
DIMENSION A (2) EQUIVALENCE (A(1),B), (A(2),B)
REAL A (2) DOUBLE PRECISION D (2) EQUIVALENCE (A(1), D(1)), (A(2), D(2))
When COMMON statements and EQUIVALENCE statements are used together, several additional rules can apply. For such rules, refer to the notes on the COMMON statement.