highvideo()              Set Text to High Intensity

 #include   <conio.h>

 void       highvideo(void);

    highvideo() sets the high intensity bit of the currently selected
    forground color. All subsequent characters written to the screen will
    be displayed at high intensity.

       Returns:     Nothing.

   Portability:     IBM PC and compatibles only.

   -------------------------------- Example ---------------------------------

    The following statements print out text at high, low and normal
    intensity.

           #include <conio.h>

           main()
           {
               gotoxy(1,1);
               cputs("Original intensity.\n");
               highvideo();
               cputs("High intensity.\n");
               lowvideo();
               cputs("Low intensity.\n");
               normvideo();
               cputs("Original intensity.");
           }