The RUN structure is used to describe a linear set of pixels that is not clipped by the CLIPLINE structure.
Specifies the starting point for a field of pixels to be drawn. The first pixel of the unclipped line is pixel 0.
Specifies the stopping point for a field of pixels to be drawn.
If the clip region is complex, a single line segment can be broken into many RUNs. The same segment is returned as many times as necessary to list all of its RUNs.