I just discovered when I have a specific kernel with scipy, matplotlib, numpy, that I can open under help a window for the numpy docu/API. If I would like to open two windows, e.g. numpy, scipy, this is not anymore possible. After having chosen numpy as reference, only Python is shown. Why could I not see more than one window?
How can I pimp my jupterlab to have better inline documentation? Eg. I hover over a method and the parameters are shown? So far I only know tab+? or ??
Solved. Click on another window and the options in the menu come back.