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Drop this script in a prim* to rotate it in 1 degree increments. *This prim must be attached as child of a root prim.

<lsl>
rotation rot_xyzq;
 
default
{
    state_entry()
    {
        vector xyz_angles = <0,1.0,0>; // This is to define a 1 degree change
        vector angles_in_radians = xyz_angles*DEG_TO_RAD; // Change to Radians
        rot_xyzq = llEuler2Rot(angles_in_radians); // Change to a Rotation
    }
 
    touch_start(integer s)
    {
        llSetLocalRot(llGetLocalRot()*rot_xyzq); //Do the Rotation...
 
    }
}
</lsl>

<lsl>
//-- this is an equivalent call from any prim in the same link set
llSetLinkPrimitiveParamsFast( target_prim, [PRIM_ROT_LOCAL, rot] );
//-- where "target_prim" is the link number of the prim you want to set the local rotation of
</lsl>