| get.similarity | Interogate similarity function for Geary-Moran TDT tests | 
| hap.transmit | Build parental haplotypes in nuclear families | 
| set.similarity | Set similarity function for Geary-Moran type TDT tests | 
| tdt.quad | TDT tests for extended haplotypes | 
| tdt.rr | Calculate haplotype relative risks in TDT studies | 
| tdt.select | Select informative transmissions of sub-haplotypes for the TDT test |