# Information > It is strongly recommended to specify a helper image that is displayed when the combined element is selected. To make selection of the combined element easier, a longer text can be entered in the description. It should be limited to 5 lines, since these are displayed simultaneously. However, the text may also be longer. ### Combined Elements - Information - Combined Element Type The combined element type defines, in particular, in which model areas and with which input functions the combined element can be used. Note: With V26, the model areas Roof Layout and Roof Structure were combined into the Roof model area. In the following tables, only the Roof model area is mentioned, even where there were still 2 model areas in the version at that time. The Floor Panel model area was integrated into the Floor Plan model area with V26 and removed from the tables. Insertion in Plan * Input function 'in plan' in the model areas Floor Plan, Slab Construction and Roof. * This type is also used when combined elements are to be inserted into floor panels or roof surfaces. The insertion points are then projected vertically (along global Z) onto the roof surface. Insertion in Wall * Input function 'along wall edge' in the Floor Plan model area * Input functions 'on the front side' and 'on the back side' in the 'Wall Construction' model area Insertion in Wall View * Input functions 'on the front side' and 'on the back side' in the 'Wall Construction' model area. * For combined elements that require input (query points) in wall view and for which input in plan is not useful. for door, window * These can be selected in the input dialogs for doors and windows. Insertion in Roof Surface * Input function 'in roof surface' in the Roof model area. * The insertion points are then projected perpendicularly (along the roof surface Z axis) onto the roof surface. * Since the X-Y coordinates of the insertion points are not sufficient here, switching to a 3D view is performed automatically when inserting these combined elements. To insert the combined elements, the current roof surface must be known. If you are not in the Roof Structure in 'Single Surface' mode, you will be prompted to select the roof surface. Insertion in Truss * Input function 'along truss edge' in the model areas Floor Plan and Roof. * Input functions 'on the front side' and 'on the back side' in the 'Truss' model area. Insertion in Truss View * Input functions 'on the front side' and 'on the back side' in the 'Truss' model area. * For combined elements that require input (query points) in truss view and for which input in plan is not useful. at points, components * Input functions 'at points, components' in the 'DICAM - Free Construction' model area.\ (19.01) Also available in the model areas Wall Construction, Slab Construction, Roof and Truss. * The insertion coordinate system is always defined via query points or query bodies. for ceiling openings, recesses. As with wall openings and recesses, combined elements can also be created in ceiling openings and recesses. For this purpose, the combined element type "*for ceiling openings, recesses*" was developed. * The system points of the opening can be accessed with the variables **OR*****n*****X** and **OR*****n*****Y** (n = 1-12). Instead of **OR*****n*****Z** of wall openings, here **OR*****n*****Y** is used. * The openings in the ceiling can be rotated. The X direction of the opening is specified with **OAR** (0° to 360°) relative to the X direction of the ceiling. * The depth of a recess is recorded in **ONT** ; it is always measured from the opening side. ### Combined Elements - Information - Assemblies Combined elements can generate assemblies: * All components created by the combined element or read from the libraries are assigned to this assembly at the end. * The assembly coordinate system can be defined with formulas. These coordinates refer to the insertion coordinate system. * In the 'Views' dialog, the views for the assembly are defined. The coordinates for the orientation of the views can be defined by formulas. As a rule, the formulas are very simple because the views refer to the assembly coordinate system and therefore often have fixed coordinates. * These assemblies can be edited with functions from 'DICAM - 7 - 06 Modify Assembly'. However, when the combined element is recalculated, these changes are lost. * Corresponding assembly drawings can be generated from these assemblies. Components of the combined element can also be assigned to an existing assembly. An existing assembly can therefore be supplemented with combined elements whose components in turn belong to this assembly. This allows combined elements to be divided into different construction parts and combined as desired while still forming an assembly in the end. * In combined element as assembly, use option 3 Attach components to assembly K1. * For this purpose, the assembly of the first query body (which belongs to an assembly) is used. * The first assembly may also already be formed by a combined element. Even if this combined element is recalculated, the reference (the query body) for the second combined element is retained: for this purpose, it is noted that the query body was, for example, the 3rd created component of the first combined element. ### Combined Elements - Information - Combined Elements for Windows and Doors To create the construction elements for windows and doors, a new technique based on combined elements has been implemented. The following entries in the information control the selection and are available only for combined elements with insertion for door, window: * Construction method: In the window input, the construction method can be set to "*Template*" or "*Combined element*". Not all combined elements are suitable for all methods. This setting defines for which method the combined element should be offered. * All: The combined element is suitable for all methods. * Combined elements: The combined element is suitable only for the "Combined elements" method. * dimensions can be changed in the input: constructions, e.g. of doors, with fixed dimensions must not be changed from the window/door dialog. If this parameter is set to No, the dimension inputs in the corresponding dialogs are disabled. * Opening type: For which opening type should the combined element be offered: All / Doors / Windows / Doors and Windows / HRB reference. * Shape type: For which shape type should the combined element be offered: Rectangle / Sloped / Pointed / Diamond / Segmental Arch / Round. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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