Save to a DGN format opens the Microstation Export/Save dialog box, which allows you to create a 2-D or a 3-D image. Although data Export/Save based on the units selected in CIP RC/PT Girder, the Units of Resolution (UOR) Information allows you to define the accuracy of the generated export file. Because DGN files keep data in an integer format, UOR information defines the number of fractional positions in a coordinate value. The Global Origin parameters allow you define the world coordinate at the center of the Microstation integer coordinate system. If you will be using this exported/saved file with other existing Microstation files, matching the global origin and UOR parameters helps to ensure that the files will superimpose properly.