MRSCALE,[<n1>],[<n2>],[<inc>],[<sx>],[<sy>],[<sz>]

scales the rotational masses belonging to the node set defined by <n1> to <n2> with step <inc>, with the scaling factors <sx>, <sy>, <sz>. If one scaling factor has the value 0.0, it will be set to 1.0. If <n1> and <n2> are not specified, they will be set to the last 2 defined rotational masses. The default value for <inc> is 1. This instruction works similarly to the NSCALE command, with the difference that rotational masses are modified.