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<Torsion name="(&string)" lower="(0&Real)" upper="(0&Real)" resnum="(0&residue number)" torsion="('' &string)" task_operations="(&comma-delimited list of taskoperations)"/>
not setting torsion, will cause the report of both phi and psi. Not specifying resnum will cause a report of all residues. If you want to filter on a given torsion, you have to specify both resnum the torsion and the higher/upper values.