What exactly do these button functions do?

BSP_ATop=31; Always on Top
BSP_OvrTop=32; Always on Top Ovr Mode

I tried using the first one in the hopes of making the BSPlayer either always on top or not, but instead it seemed to make the windowed video screen permanently always-on-top.

Is there a way to make the player always on top (and return it to normal)? And is there a way to make the video screen no longer always-on-top?