Regulations for Qualifiers C13

Continuing with Zonal Qualifiers C15-C26 : Summary, I added a new page C13: Zonal Qualifiers 1984-1987. The first cut covers only the rules for qualification into the Interzonals, so I still need to add the qualification paths for individual players.

What happened to C14: 1987-90? I haven't been able to locate a description of the qualification rules for that cycle. I suspect that the rules for C14 were similar to C13 and will test that hypothesis after completing C13.