Abstract: A separate window is provided for each of multiple OpenDoc Canvas objects, thereby effecting a multiple Canvas-per-compound document design. Possibility of one OpenDoc object drawing in another object's screen area is eliminated by clipping imposed by the graphics engine on a per-window basis. Multiple different rendering libraries may be employed for screen imaging. The raw window may be used for direct platform-specific drawing functions and other rendering toolkits. User interface elements associated with alternative graphical user interfaces may be used as the root of a window hierarchy. A PlatformCanvas represents a handle to platform-dependent data types which are passed directly to native drawing routines and which provides a generic entity for specifically handling platform-specific architectures, providing a generic representation of platform-specific structures.

Abstract: A casing of plastic provided with casing chambers for the reception of electric plug connectors, and also provided with rest arrangements connectable with rest arrangements of an adjacent casing to form a belt. A first rest arrangement is arranged on a first side wall and a second rest arrangement is arranged on the oppositely lying second side wall. The first rest arrangement includes at least one hook-shaped rest finger molded to the first side wall and projecting therefrom, being formed by a connecting strip and by a rest strip molded thereto and extending upward. On the second side wall there is arranged at least one outward-projecting lug member forming the second rest arrangement, which includes a connecting strip and a bow portion joined therewith. The bow portion is provided with a recess for receiving and retaining the rest strip of an associated similar casing therein to form the belt.