Defining these models was obtained empirically until they allowed an exhaustive detection in refseq-protein and Genbank databases of the homologs among ascoviruses, iridoviruses, phycodnaviruses, mimiviruses and asfarviruses. The procedures were done until we were only able to detect exact match with the syntactic model. Whatever obtained with WAPAM, they required a confirmation with other approaches. Here, we used Psipred result comparison for regions with scores over 7 and HCA analyses for regions having scores lower than 7 with Psipred. This simplified the statistical treatment of the result obtained with WAPAM, since all exact matches have significance or a score of 100%.