How to know combinator signal values?

[wheezil]

It would be nice to be able to see the input/output values used by a combinator. But I can't figure out how. The posts I've read all reference older options or plugins.
Thanks
john

[Loewchen]

Connect it to a pole and check the values there.

[Nidan]

When hovering over a combinator, the information below the minimap displays these values, if there are any.

[asheiduk]

Connect it to a pole and check the values there.

I call that "debug post"

[wheezil]

Oh wow, the "debug pole" trick worked!
The minimap doesn't work, just because it is too full.
Thanks
john