The Main Window
In the menu bar you find several options to save or load data. Supported file formats are .s1p, .s2p, xlc, .cvs, .vnaproj. "save project" will save all open windows including "live measurement" into a .vnaproj. Loading .vnaproj will reopen all saved windows including the data plotted.
The window bar gives you the possibility to open new windows. Live measurement and Calibration can have only one instance, instead more than one window containing plots (XYY or Smith) can be opened.
The status bar gives you some hardware information if connected. It says "No device was found" if pocketVNA hardware is not connected.