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### 7.109 `.struct` expression

Switch to the absolute section, and set the section offset to expression, which must be an absolute expression. You might use this as follows:

                 .struct 0
         field1:
                 .struct field1 + 4
         field2:
                 .struct field2 + 4
         field3:

This would define the symbol `field1` to have the value 0, the symbol `field2` to have the value 4, and the symbol `field3` to have the value 8. Assembly would be left in the absolute section, and you would need to use a `.section` directive of some sort to change to some other section before further assembly.