formed on the dmd the ring gobo is type 000a when the gobo type 0a is enabled the gobo editor 110 on the console 104 is enabled and the existing gobo encoders 120 122 124 and 126 are used the gobo editor 110 provides the operator with specialized control over the internal and the external diameters of the annulus using separate controls in the gobo editor the gobo editor and control system also provides other capabilities including the capability of timed moves between different edited parameters for example the ring forming the gobo could be controlled to be thicker the operation could then effect a timed move between these 34 preset 34 ring thicknesses control like this cannot even be attempted with conventional fixtures another embodiment is a composite gobo with moving parts these parts can move though any path that are programmed in the gobo data itself this is done in response to the variant fields is in the gobo control record again with timing multiple parts can be linked to a single control allowing almost unlimited effects another embodiment of this system adapts the effect for an 34 eye 34 gobo where the pupil of the eye changes its position look left look right in response to the control yet another example is a polygon record which can be used for forming a triangle or some other polygonal shape the control can be likened to the slider control under a quicktime movie window which allows you to manually move to any point in the movie however our controls need not be restricted to timelines even though such moving parts are used scaling and rotation on the gobo is also possible the remaining control record bytes for each type are defined as.