Creation of subobjects for selected object by marked objects

 If necessary you can cut subobjects for selected area object in accordance to contours of marked objects. For example, at first the forest and the lakes separately are digitizing and then subobjects (inner boundaries) are automatically forming along contours of lakes falling on terrain of the concrete forest.

To execute this procedure you must mark objects on a map on which one the subobjects creation will be made, and select area object on a map for which one you must create these subobjects (only after that the button of Map Editor panel appropriate for the given mode will be accessible to clicking).

After activating a mode the program will offer you to process the first of marked objects (representation sequence of deleted objects depends on theirs physical allocation on the disk). Thus the system will inform you about the brief characteristics of processed object and will indicate its allocation on a map. You can either stop process, or process the indicated object, or pass to the next object without processing the current, or to give a command onto processing all of stayed marked objects without further requests of the system. After processing of current object the system automatically passes to the next one (if that is present).  

It is necessary to remember that only those area or closed linear objects will be processed  which are located completely inside selected area object. The objects intersecting a contour of selected object will not be treated.

Creation of subobjects-multipolygons is performed in a similar way: select polygons on the map, select a polygon object, at which it is necessary to create subobjects, and activate the mode of creating a multipolygon. As a result of the operation, the selected and marked objects on the map, located outside the contour of the selected object, are assigned the attribute of the multipolygon.