Nested Macro Definitions

> | III.11.8 Nested Macro Definitions A macro body may also contain further macro definitions. However, these nested macro definitions aren't valid until the enclosing macro has been expanded! That means, the enclosing macro must have been called, before the nested macros can be called. Example 1: A macro, which can be used to define macros with arbitrary names, may look as follows:
>             DEFINE MACRO MACNAME
>             MACNAME MACRO
>             DB 'I am the macro &MACNAME.'
>             ENDM
>             ENDM
> In order not to overload the example with "knowhow", the nested macro only introduces itself kindly with a suitable character string in ROM. The call
>             DEFINE Obiwan
> would define the macro
>             Obiwan MACRO
>             DB 'I am the macro Obiwan.'
>             ENDM
> and the call
>             DEFINE Skywalker
> would define the following macro:
>             Skywalker MACRO
>             DB 'I am the macro Skywalker.'
>             ENDM
> Example 2: A macro is to insert a variable number of NOPs into the program. For this, a macro with a nested REPT block seems to be best-suited:
>             REPEAT MACRO NOPS
>             REPT NOPS
>             NOP
>             ENDM
>             ENDM
> The macro call
>             REPEAT 4
> results in something like that:
>             Line  I  Addr  Code            Source

>                9+ 1        N      0004     REPT 4
>               10+ 1                        NOP
>               11+ 1                        ENDM
>               12+ 2  0000  00              NOP
>               13+ 2  0001  00              NOP
>               14+ 2  0002  00              NOP
>               15+ 2  0003  00              NOP