Hi Jan - Please excuse the delay in replying. Having searched around it is something that must have been turned on by default. I eventually found where you can turn the labels on/off.
If you go to the top left corner and click "About" and then "Instructions" there is a check box at the bottom of the window to turn them on or off. When it's selected the labels appear if you hover the mouse in the areas I mentioned.
All the best to you and the team.
Tim