Traditional Culture Encyclopedia - Weather forecast - What is the diagonal line on the weather sign of Samsung s7?

What is the diagonal line on the weather sign of Samsung s7?

Right-click the blank space in the hardware configuration, and select Insert Object, SIMATIC300, RACK-300 and guide rail to finish adding the rack. Insert the second rack: right-click the "RAIL" in the blank space to complete the insertion of the second rack. I tested it normally in version s7 5.5.