source: tags/ms_r16q4/HELP_SOURCE/oldhelp/pos_var_pars.hlp

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#************* Title of helpfile !! and start of real helpfile ********
TITLE           Column statistic 

OCCURRENCE      ARB_NT/SAI/Create SAI from Sequences/Positional Variability ...

DESCRIPTION     Calculates the base and frequencies positional variability for
                each column independently.
                It uses the parsimony method to find the minimum number of
                mutations for each site.

                The result can be used by:

                - Parsimony to weight the characters properly
                - Neighbour joining to estimate the distances more accurately.
                - Filter

                Result:

                        '.'                          Less than 10% valid characters

                        '0123456789ABCDE...'         The higher the number the more conserved the site is.
                                                     Stepping 2 position rightwards in the list of given char,
                                                     means half number of mutations (eg .'7' means "half number
                                                     of mutations compared to '5'")

NOTES           Use the biggest tree you have.

NOTE            @@@ Compare it to consensus and max frequency.

WARNINGS        if you have only small trees (<100 species), forget this 
                function.

BUGS            No bugs known