When you save a file with Source Insight and you have a project open, Source Insight records the file’s modification time in the project. If you open a project file and the file’s modification date is newer than the date recorded in the project, then Source Insight will re-synchronize the file project symbol database for that file. By automatically synchronizing, Source Insight allows you or others in your development team to use another text editor or a source control system and still maintain Source Insight’s project databases. See also “Synchronize Files”.