Battery The leftmost icon indicates roughly the battery capacity.Overload in any of the measurement channels is indicated with a red dot. When there is no overload condition, this dot is gray.
Measurement running is indicated with a green triangle (play symbol). Before any measurement is started, the symbol is an empty square, and after the measurement it is a filled green square.
Measurement time: is displayed during the measurements with hours, minutes, seconds and milliseconds. Otherwise the clock is shown.
? Tap on this symbol to activate the help system (which you already have done).