In the Documentation Editor the Spacebar produces an underline character when typing in the Element name. However when adding a new Element the Spacebar produces a space which is then generates an error message. I think they should both work the same.
Second small annoyance I mentioned a long time ago. When copying an element the editor adds an underline at the beginning of an Element name and also increments the end of the element. This then requires you to edit both ends of the new Element which effectively defeats the time savings you get from copying. Just incrementing the end of the Element would be so nice. The first Element could be Alarm_, the second would then be Alarm_2, Alarm_3 and so on.