Analog Devices VisualDSP++ 3.5 Manual page 263

The encryption process ensures that a symbol with external binding is
encrypted the same way in all object files contained in the library. This
process also ensures that correlated symbols (see explanation above) within
an object file are encrypted the same way, so they remain correlated.
The names listed in the
" " in the
_foo exclude-file
" ", "
_foo ._foo
The
type-letter
encrypted part of a symbol name, ensures that the encrypted names in dif-
ferent archive libraries can be made distinct. If different libraries are
encrypted with the same
bols of the same length may be encrypted identically.
VisualDSP++ 3.5 Linker and Utilities Manual
for 16-Bit Processors
exclude-file
prevents the encryption of the symbol names
", " ", and "
_foo.end
argument, which provides the first letter of the
type-letter
are interpreted as root names. Thus,
".
._foo.end
argument, unrelated external sym-
Archiver
6-17