Chris DeGreef - 2013-12-04 
funnel --replace SystemGeneratedFile.bin --fixed 80 --keys(binteger, --offset 0, --length 8, desc)

This is a sort of the fixed length file called SystemGeneratedFile.bin. It will be sorted in-place (-–replace). The file is made up of rows of exactly 80 bytes long. (note: it is not necessary to specify the -–maxrows because Funnel can compute it for fixed length files.) A key is provided since there really is no default key available for a fixed length, binary type of file.

Also notice that –-replace is first, before the file name. That is an option, it doesn’t have to be there. It can be pretty much anywhere.