if (screen->cur_col > screen->max_col) screen->cur_col = screen->max_col;
if (screen->cur_col > CurMaxCol(screen, screen->cur_row)) screen->cur_col = CurMaxCol(screen, screen->cur_row);
CursorForward(register TScreen *screen, int n){	screen->cur_col += n;	if (screen->cur_col > screen->max_col)		screen->cur_col = screen->max_col;	screen->do_wrap = 0;	_CheckSelection(screen);}