Enterprise Developer Assembler support includes many DOS/VSE macros, essentially by mapping DOS/VSE functions onto MVS functions. The VSECOMP Assembler Compiler directive allows Assembler Option to correctly interpret DOS/VSE macro operands where these differ from their MVS counterparts.
DOS/VSE-specific macros other than those listed above are not supported.
For more information, please consult the IBM manual VSE/ESA System Macros Reference SC33-6516.