A symbol can be created after selected one or more elements and activating the command Edit/Symbol/Create (or clicking the appropriate icon).
Under "Object-name" the name of the symbol as it should appear in the library must be entered. The symbol name must not include dots.
If a symbol is created or edited in the symbol editort, single properties of the elements of the symbol can be added via Drag&Drop in the bottom part of the symbol editor. These properties are displayed in addition to the regular properties of the symbol in the property window under '$_elementname'.
If a property of an element is chosen in the property window of a symbol, the element blinks in the picture.