EXITM            Immediate macro exit                         Macro Directive

  EXITM

    You can use the EXITM directive within a macro body to prematurely
    terminate the assembly of an included macro body.

    When Turbo Assembler encounters EXITM in a macro body that has been
    included in the module source code, assembly of the expanded macro
    body stops immediately. Instead, TASM will continue assembling the
    module at the end of the macro.

    You can use the EXITM statement with a conditional assembly directive
    to terminate a macro expansion when certain conditions are met.