You can save VIs as individual files or you can group several VIs together and save them in a VI library. VI library files end with the extension .llb. National Instruments recommends that you save VIs as individual files, organized in directories, especially if multiple developers are working on the same project.
![]() | Note Make backup copies of your VIs before you upgrade to a new version of LabVIEW or when you prepare to make major revisions to the VIs. |
You also can use the Save Instrument method to save a VI programmatically.