## ALP Programming Guide and Reference

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### Displacement

The Displacement value in an expression is the final calculated value of all numeric quantities, and must be a scalar value. It may also be a reference to a relocatable address, in which case the expression will also have a Relative Frame and/or an External Reference attribute. A Displacement may be used in the calculation of an effective address, either alone or in combination with a Base Register and/or an Index Register.