Index numbers

Specific input regarding the pedigree side of the site- generating reports, compiling data, etc.

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hotrod horses
Weanling
Posts: 43
Joined: Sat Aug 30, 2008 5:35 pm
Location: Pennsylvania

Index numbers

Postby hotrod horses » Wed Jan 17, 2018 8:59 am

I have had this question for sometime.
What do the index numbers refer to???
When doing hypo matings I have seen them all over the place.