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#### External Animation Loop

`Clock=`n.n | Sets `clock` float identifier to n.n
`+K` n.n | Same as `Clock=`n.n

The `Clock=`n.n option or the `+K` n.n switch may be used to pass a single float value to the program for basic animation. The value is stored in the float identifier `clock`. If an object had a `rotate <0,clock,0>` attached then you could rotate the object by different amounts over different frames by setting `+K10.0`,`+K20.0`... etc. on successive renderings. It is up to the user to repeatedly invoke POV-Ray with a different `Clock` value and a different `Output_File_Name` for each frame.

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