QD, and VD, which represent 8 byte (doubleword) versions of types 'A', 'J', 'Q', and 'V' to hold 64 bit addresses.

Relocatability

The nominal value of the 'DC' is a list of expressions enclosed in parentheses. Expressions can be absolute, relocatable, or complex relocatable.

An absolute expression can be completely evaluated at assembly time and does not require further processing by the linkage editor. For example, DC A(4900796) has an absolute nominal value.

A relocatable expression

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