Used With Routines:  CONTOUR,  CONTOURFS,  CONTOUR2,  OPLOT,   PLOT,  PLOTS,  POLYFILL,  SURFACE, XYOUTS

For PLOT, CONTOUR, CONTOUR2, and SURFACE, enforces the default clipping behavior, which is to clip graphics at the boundary of the Plot Data Region (area bounded by the coordinate axes). For OPLOT, PLOTS, POLYFILL, and XYOUTS, disables clipping altogether, allowing text and graphics to be drawn anywhere in the Device Area.