On the View menu, point to Display, and then select from these settings:
Analysis Mode
Open a 3D view and select analysis mode to merge adjacent surfaces and prepare the building geometry for export; for example, "Internal Floor" and "Internal Ceiling" polygons will be merged in order to form a single construction type, expressed as a concatenation of the two element names. The process will produce a new building element called "Internal Floor/Internal Ceiling". In addition, if a wall is partially internal and external, the analysis model will be furnished with a new building element called "<element 1>-exposed", where <element 1> is the original name of the building element. This mode also checks for geometry errors and warnings, such as non-planar polygons or exposed <null> floors adjacent to zoned spaces. Depending on the complexity of the geometry this process can take some time. If errors are identified then you are advised that the geometry data cannot be exported to the Building Simulator until they have been removed. The software describes the errors on the "Analysis mode errors and warnings" dialog.
Perspective
Switches from an orthographic view to a perspective view. This view illustrates the three-dimensional building where rooms and surfaces are drawn based on their dimensions and the eye position relative to the rooms and surfaces. In this view surfaces are drawn smaller as their distance from the observer increases. Objects are also foreshortened; the size of an object's dimensions along the line of sight are relatively shorter than the dimensions across the line of sight.
Orthographic
Switches from a perspective view to a representation of the three-dimensional building where projection lines are orthogonal to the projection plane. This view ignores the effect perspective has on distant objects relative to objects close by. The resulting view of the building is shown in affine transformation; this means the midpoint of a line remains the midpoint and sets of parallel lines remain parallel after transformation.
Solid
A shaded 3D view where walls, floors, and ceilings are coloured by building element, zone, or analysis, depending on which setting is selected on the "Colour by" menu.
Wireframe
A wireframe view of the building is displayed. The inside and outside surfaces are drawn, giving an indication of element widths.
Transparent
A transparent view where walls, floors, and ceilings are coloured by building element, zone, or analysis, depending on which setting is selected on the "Colour by" menu.
Combination
Opens the Display Settings dialog from where you can select either Solid, Transparent, Wireframe, or "Not Displayed" for walls, floors, and ceiling surfaces. The option "Not Displayed" removes the surface type from the view.
You can also choose separately for imported gbXML shade surfaces if any exist in the model (this option is greyed out for non-gbXML models).