Figure 2

ANSI method:       printf("\033[2J");
Turbo C and C++:   void clrscr(void) in conio.h
MSC and Watcom:   void _clearscreen(_GCLEARSCREEN)
                          in graph.h
MIX Power C:       void clrscr(void) in bios.h
ECO C:             void clrscr in ??? (not given)
IBM MVS:           an assembly language routine
                          on a public library
                          #pragma linkage(cls,OS)
                          void cls(void)