WHat are these holes for?

[bruce.desertrat]

I found a discarded Ryobi cheap tablesaw on the side of the road the other day, grabbed it for parts (the fence on my noname import broke and this one had a good fence)

And the table has holes in the same place as on mine (and most every other cheap import tablesaw like it I've ever seen, kinda guess they're all made in the same factory) I've looked around and haven't found any explanation for them. IS there actually a purpose for them?

(You couldn't easily use them to mount a router, for example, because there's nothing on the underside to support a use like that.