What Are Call Tips, And How To Use Them?

[rob86 2]

I've been trying out different IDE's and Python shells and have found a useful feature on many. A little popup comes up when I type something like, time.Time( which describes it and the parameters and a little bit of info on it. Are these called call tips? I've been trying to get this on Geany.. the manual says to show a call tip, to use CTRL-SHIFT-SPACE. I've been CTRL SHIFT SPACING all over the place, and I can't get anything to happen. What am I missing?