BRLTTY has several commands to move backward and forward one braille window. The simplest vairants, CMD_FWINLT and CMD_FWINRT display all windows, even blank ones. The SKIP variant, as its name says, skips blank windows. Which command is actually bound to a braille key depends on context and can be changed dynamically. It would thus be great if Orca could react to the SKIP variant the same way it reacts to the simple variant.