helpString += "otu.hierarchy(list=yourListFile, label=yourLabels).\n";
helpString += "Example otu.hierarchy(list=amazon.fn.list, label=0.01-0.03).\n";
helpString += "The otu.hierarchy command outputs a .otu.hierarchy file which is described on the wiki.\n";
helpString += "otu.hierarchy(list=yourListFile, label=yourLabels).\n";
helpString += "Example otu.hierarchy(list=amazon.fn.list, label=0.01-0.03).\n";
helpString += "The otu.hierarchy command outputs a .otu.hierarchy file which is described on the wiki.\n";