The heating history is a nice feature but it would be even better if you could select which rooms to view so you can review heating for multiple or even all rooms.
The heating history is shown by room - so if you are looking at your living room, then the graph relates only to that room.
If I misunderstood your suggestion, could you perhaps rephrase it for me?
What I was trying to say is that I would like to see the heating history not just as one graph per one room but one graph for many rooms. So you open then graph window and then select which rooms to see and you then see the history for those selected rooms in the same graph. Hope that makes it clearer.