As previously stated, expressions are evaluated in the context of the target address space.
Most MainView SYSPROG Services that accept an expression also permit you to explicitly specify the target address space. However, you might not need to do so because the target address space is implied by the first evaluated symbol.
Note
Most predefined symbols have a null address space attribute. In that case, your address space will be the implied (default) address space.
In addition to a value, each symbol has a length attribute and a target address space attribute. The attributes that are associated with the first evaluated symbol in an expression are retained and used when you do not specify a length or target address space.
For example, the OLIST service creates a symbol name for each memory object in the specified address space. You can subsequently refer to the memory object by its symbolic name; the address space that contains it will be implied. You can also use the EQUATE service to associate an address space with a symbol that you define.
