extrn   _filebufloc:dword, _filebuflen:word

extrn   _openfile:near, _closefile:near, _lseekfile:near, _readfile:near
extrn   _writefile:near, _createfile:near, _filesize:near, _filecopy:near
extrn   _deletefile:near, _findfile:near

extrn   setup_env:near, localpath:byte, envirpath:byte, progname:byte
extrn   _findmarker:near