[modeller_usage] Generate PDB using diheral angles

Currently i am using the tleap in amber tools to generate a PDB using only dihedral angles. Is it possible to generate a PDB/Model using only dihedral angles and the sequence, just like amber tools. I have read the whole manual, but didn't get anything useful. The only way you can restrain your model is using restrain file .rsr, which i really don't know how to generate from dihedral angles.