Using a project file can help you with several goals. When you work with multiple data files, such as comparing numerous history match runs to observed data, it is useful to load and unload all associated files simultaneously. A project file can do this. When you work with the same data file on multiple occasions, a project file can help you return to visualize the data file the way you did previously. In case you work with a large data file that might cause Tecplot RS to crash, saving a project file will ease the pain of crashing, since you will usually lose less work. Trivial in size but large in power, project files can help speed the workflow of most users.
A Project file consists of a list of data files (with their file paths for simultaneous loading), saved plot styles, and paper layout settings. The Project file is a tagged text file (XML) so that you can edit it manually if you wish, while remaining usually small in size. All these factors allow you to use a Project file to return to a set of data files with the “look” you have established for them.