BACKGROUND_MASK    59 ext/-test-/win32/console/attribute.c     rb_define_const(m, "BACKGROUND_MASK", INT2FIX(BACKGROUND_MASK));
BACKGROUND_MASK  6434 win32/win32.c      ((attr) & ~(FOREGROUND_MASK | BACKGROUND_MASK)) | \
BACKGROUND_MASK  6436 win32/win32.c  	   (((attr) & BACKGROUND_MASK) >> 4)