If I'm understanding your question, there is. Have you ever seen
files in newsgroups with the extensions .par, .p01, .p02? The ones
with the .par extenson are for checking to see if rar (and files that
were split using a utility like hjSplit) files are, corrupt, complete,
etc. The .p01, .p02, .....are for repairing/replacing damaged or
missing parts. Do a search for SmartPar, it should be easy to find.