If you look at the LOADPARMS32 structure,
you'll find a horrific mishmash.
Double-null-terminated strings,
a null-terminated string,
some WORDs, and
even a Pascal-style string.
What's going on here?
Each of those members comes from a different era in time.
The oldest member is the Pascal-style command line,
which dates back to CP/M.
On CP/...