Once you've actually found the right syntax that makes the assembler just use
the default call type of the current memory model for both procedures (where
it's just "PROC" without anything else) and labels (where it's "LABEL PROC"),
these constants become completely unneccessary, even with TASM.
Lol, these are so similar to __rtl_write and __write that Git's diff treats
reada.asm as a modified copy of writea.asm. Same situation with the CAS file
here, too.