The past 15 years opened new avenues for retrovirus and retroelement research. 
Not surprisingly, they stemmed from essential knowledge collected in the past, 
which remains the ground of the present and therefore should be remembered. 
However, a short supplement of new break-through discoveries and ideas should be 
recollected. Using selected examples of recent works, I tried to extend and 
supplement my original article published in Folia Biologica (1996).