.                Structure Field-Name Operator                  MASM Operator

  structvariable.field

    Used to access a field within a structure.

       Notes:     Structvariable is a variable previously declared as a
                  structure and field is a field within that structure.

                  The effective address generated when using this operator
                  ('.') is the sum of the offset of structvariable and the
                  offset of field within the structure.  This address is
                  relative to the group or segment in which structvariable
                  is defined.

                  This operator is equivalent to using the addition
                  operator ('+') in indexed or base operands.