explain vcfindex
explain vcfindex

travc/vcflib,ashishjain1988/vcflib,ashishjain1988/vcflib,harshinamdar/vcflib,ashishjain1988/vcflib,ekg/vcflib,zhmz90/vcflib,ashishjain1988/vcflib,hyphaltip/vcflib,zeeev/vcflib,hyphaltip/vcflib,vcflib/vcflib,vcflib/vcflib,harshinamdar/vcflib,zeeev/vcflib,vcflib/vcflib,hyphaltip/vcflib,ekg/vcflib,vcflib/vcflib,travc/vcflib,vcflib/vcflib,zhmz90/vcflib,harshinamdar/vcflib,zhmz90/vcflib,zeeev/vcflib,harshinamdar/vcflib,wzugang/vcflib,glennhickey/vcflib,zhmz90/vcflib,glennhickey/vcflib,glennhickey/vcflib,jewmanchue/vcflib,tomdcsmith/vcflib,wzugang/vcflib,wzugang/vcflib,travc/vcflib,ashishjain1988/vcflib,jewmanchue/vcflib,jewmanchue/vcflib,hyphaltip/vcflib,harshinamdar/vcflib,glennhickey/vcflib,zhmz90/vcflib,jewmanchue/vcflib,jewmanchue/vcflib,vcflib/vcflib,ashishjain1988/vcflib,zeeev/vcflib,glennhickey/vcflib,tomdcsmith/vcflib,glennhickey/vcflib,ekg/vcflib,tomdcsmith/vcflib,hyphaltip/vcflib,ekg/vcflib,hyphaltip/vcflib,jewmanchue/vcflib,vcflib/vcflib,zeeev/vcflib,zhmz90/vcflib,zeeev/vcflib,wzugang/vcflib,wzugang/vcflib,ekg/vcflib,wzugang/vcflib,vcflib/vcflib,harshinamdar/vcflib