Much of this functionality is available via the Web form and matching CGI program which accompany the application (a list of such public sites, along with the source code and other information, is maintained at the project website tacg central <a href="http://tacg.sourceforge.net).ImplementationMost">http://tacg.sourceforge.net).ImplementationMost</a> of the fast searching algorithms (BLAST [2], FASTA[17], DNA Strider [18]) use variants of a discrete finite-