In VariCAD file-dialog, the preview window displays content of VariCAD file. The 3D content is created automatically whenever a file is saved. In preview window, the image is displayed as a 3D shaded view. You can optionally select a view used for preview creation (zoom, pan, angle of view, or basic views like front-view). Such option can be selected individually for any file. Otherwise, the preview is created according to current view, or using automatically “zoom all”. Zoom all vs. current zoom, or surface color displaying in preview uses common settings shared by all files.