Assembly Macros?

Can anyone show me one or two examples of macros in assembly, best if in Masm context.plus some explanations.

Is macros in masm almost similar to macros in C?

Thanks.

Code:

---


INITZ MACRO
          MOV AX, @data
          MOV DS, AX
          MOV ES, AX
          ENDM

FINISH MACRO
          MOV AX, 4C00H
          INT 21H
          ENDM

---

Two macros in 80x86 assembly using the MASM syntax.

Macros in assembler are placed directly into the code like macros in C++ (and I think C too.)