- Subtraction. The first expression can have any class, but the second expression must be an absolute immediate
value. The result has the same class as the first expression.
: Segment override. Instructs the assembler that the expression after the colon belongs to the segment given by
the segment register name (CS, DS, SS, FS, GS, or ES) before the colon. The result is a memory reference with
the value of the expression after the colon. When a segment override is used in an instruction operand, the
instruction is prefixed with an appropriate segment-override prefix instruction to ensure that the indicated segment
is selected.
OFFSET Returns the offset part (double word) of the expression following the operator. The result is an immediate value.
240
TYPE
Returns the type (size in bytes) of the expression following the operator. The type of an immediate value is 0.
PTR
