Opening a file
                                        1.  Click the black triangle of the Open version 
 button.
2. Select the desired file type.
| 
                                                         File type  | 
                                                    
                                                         File extension  | 
                                                    
                                                         Description  | 
                                                
| 
                                                         Project directories  | 
                                                    
                                                         *.pfd  | 
                                                    
                                                         Default path settings by file type (Opening a project directories file)  | 
                                                
| 
                                                         Version  | 
                                                    
                                                         *.ver  | 
                                                    
                                                         Network and various settings and parameters (Opening a version file)  | 
                                                
| 
                                                         Network  | 
                                                    
                                                         *.net  | 
                                                    
                                                         Network data (Opening and saving a network file and adding comments)  | 
                                                
| 
                                                         Demand data  | 
                                                    
                                                         *.dmd  | 
                                                    
                                                         Demand data (Reading demand data from file)  | 
                                                
| 
                                                         Filters  | 
                                                    
                                                         *.fil  | 
                                                    
                                                         Filter settings for all network objects (Saving, reading and copying filters)  | 
                                                
| 
                                                         Procedure parameters  | 
                                                    
                                                         
                                                              | 
                                                    
                                                         List of selected procedures and the particular settings (Opening procedure parameter settings from file)  | 
                                                
| 
                                                         Graphic parameters  | 
                                                    
                                                         *.gpa, *.gpax  | 
                                                    
                                                         Settings for graphical network display (Reading graphic parameters of the Network editor window)  | 
                                                
| 
                                                         Attributes  | 
                                                    
                                                         *.att  | 
                                                    
                                                         Attribute data by network object type (Reading attribute data into lists)  | 
                                                
| 
                                                         Active network objects  | 
                                                    
                                                         *.ane  | 
                                                    
                                                         Spatial selection settings for all network objects ("active" or "passive") (Reading a spatial selection of network objects)  | 
                                                
| 
                                                         Texts  | 
                                                    
                                                         *.txt  | 
                                                    
                                                         Texts to be displayed in legend or background (Opening texts)  | 
                                                
| 
                                                         Legend parameters  | 
                                                    
                                                         *.lgd  | 
                                                    
                                                         Legend parameters (Opening and saving legend parameters)  | 
                                                
| 
                                                         Network merge parameters  | 
                                                    
                                                         *.nmp  | 
                                                    
                                                         Settings for reading a merged network (Merging networks)  | 
                                                
| 
                                                         Environmental parameters  | 
                                                    
                                                         *.upa  | 
                                                    
                                                         Environmental calculation parameters (Setting environmental impact parameters)  | 
                                                
| 
                                                         User preferences  | 
                                                    
                                                         *.xml  | 
                                                    
                                                         Load settings in the Edit > User Preferences menu (Saving, opening and restoring user preferences)  | 
                                                
| 
                                                         Script menu file  | 
                                                    
                                                         *.xml  | 
                                                    
                                                         Entries in the Script menu (Editing the script menu)  | 
                                                
| 
                                                         Scenario management project  | 
                                                    
                                                         *.vpdb, *.vpdbx  | 
                                                    
                                                         Project of scenario management (Scenario management)  | 
                                                
| 
                                                         Vistro Scenario management project  | 
                                                    
                                                         *.vistropdb, *vistropdbx  | 
                                                    Project of the Vistro Scenario management | 
The Open <file type> window opens.
3. Select the desired path and file name.
| 
                                                         Note: You can edit the path displayed here by default (Editing the storage location of files).  | 
                                                
4. Click the Open button.
In case of unsaved changes to the current network when opening a network or version file, a security prompt appears.
| 
                                                         Note: Depending on the selected file type, further windows might open for further settings required. For more information, please refer to the particular manual sections.  | 
                                                
5. If applicable, confirm this query with Yes.
The file is opened.
| 
                                                         Note: Possible effects depend on the selected file type and on your settings. 
  | 
                                                
| 
                                                         Tip: You can also open a file by clicking the selected file in the list of recently opened files on the File menu. Alternatively, drag a file from the Windows Explorer to the program interface.  | 
                                                

