taglinefilesource code
bottom464drivers/char/console.cbottom = video_num_lines;
bottom532drivers/char/console.cmax_y = bottom;
bottom760drivers/char/console.cif (y+1 == bottom)
bottom761drivers/char/console.cscrup(currcons,top,bottom);
bottom775drivers/char/console.cscrdown(currcons,top,bottom);
bottom1235drivers/char/console.cscrdown(currcons,y,bottom);
bottom1254drivers/char/console.cscrup(currcons,y,bottom);
bottom1335drivers/char/console.cbottom    = video_num_lines;
bottom1785drivers/char/console.cbottom=par[1];