This menu can be used to highlight certain
types of sites. The options are constant sitesRH_Constant_site,
variable
sitesRH_Variable_site,
parsimony-informative
sitesRH_Parsimony_informative_site,
singleton
sitesRH_Singleton_Sites,
0-foldRH_Degeneracy, 2-foldRH_Degeneracy
and 4-fold
degeneratesitesRH_Degeneracy.