helpString += "If you want .abund and .rare files for all groups, set groups=all. \n";
helpString += "The split.abund command should be used in the following format: split.abund(fasta=yourFasta, list=yourListFile, group=yourGroupFile, label=yourLabels, cutoff=yourCutoff).\n";
helpString += "Example: split.abund(fasta=abrecovery.fasta, list=abrecovery.fn.list, group=abrecovery.groups, label=0.03, cutoff=2).\n";
helpString += "If you want .abund and .rare files for all groups, set groups=all. \n";
helpString += "The split.abund command should be used in the following format: split.abund(fasta=yourFasta, list=yourListFile, group=yourGroupFile, label=yourLabels, cutoff=yourCutoff).\n";
helpString += "Example: split.abund(fasta=abrecovery.fasta, list=abrecovery.fn.list, group=abrecovery.groups, label=0.03, cutoff=2).\n";