This appendix lists the options for High Level Assembler. In particular, the IBM-supplied default value for each option is indicated. You can use the ASMAOPT installation macro to select different values to be the defaults for your site.

For more information about how to change the default options, using ASMAOPT, see Step 3: Change default options and DDNAMES (z/OS), Changing option and DDNAMES defaults (CMS), or Changing default options (z/VSE).