Generic function
Returns #t if all points in the second region are members of the first region.
region-contains-region? region1 region2 => boolean
<region>.
<region>.
<boolean>.
duim-geometryduim-geometry Returns #t if all points in the region region2 are members of the region region1, otherwise returns #f. region-contains-position? is a special case of region-contains-region? in which the region is the point x,y.