This binary was renamed from plink to p-link because there is a name clash between this plink and a part of the ssh clone putty. Please read /usr/share/doc/plink/README.Debian to learn more about this.
P-link works on SNP datasets that have already been pre-analysed for their reliability and their calling to AA, BB or AB. It finds associations with a disease of single SNPs or pairs, determines haplotype blocks or retrieves information on SNPs from an online repository.
This manual page must be insufficient. Please use the help option for a quick reminder of the options of p-link or turn to its home page with the online documentation or the downloadable manual.