<p> Selecting this option causes the colour scheme to be applied to only those
residues that occur in that column more than a certain percentage of the time.
For instance selecting the threshold to be 100 will only colour those columns
<p> Selecting this option causes the colour scheme to be applied to only those
residues that occur in that column more than a certain percentage of the time.
For instance selecting the threshold to be 100 will only colour those columns