add_note# Emission.add_note(text, x_position=0, y_position=0)# Add a note at a position. Parameters: textstrText of the note. x_positionfloat, optionalx position of the note. The default is 0.0. y_positionfloat, optionaly position of the note. The default is 0.0. Returns: boolTrue when successful, False when failed.