This appendix contains a full description of each macro. The effect of each macro is described and the expansion of the macro on each of the supported systems is given. Consult the VMS Starlink documentation set for information on the VMS release. This seems to be a bug in the offending compilers, but the problem is there none the less.
Many macros currently expand to an empty string on all currently supported systems.
Nevertheless, the macros should still be used to guard against them being necessary on future systems.