Syntax	whatcolorback : int
Description	The whatcolorback function is used to determine the current background color. The alternate spelling is whatcolourback.
Example	This program outputs the currently-active background color number. The background color of the message is determined by this number. setscreen ("screen") … put "The background of this writing" put "is in color number ", whatcolorback
Details	The screen should be in a "screen" or "graphics" mode. Beware that the meaning of background color is different in these two modes. See colorback for details.
See also	color and whatcolor. See also predefined unit Text.