Can we have like a small description on each field (that we define) whenever we move or we hover the mouse on that field? (Please check the snapshot).
Let me know if this is achievable.
Search for "Creating field help" on Help, it describe how to create a field help.
The shortcut for access the help is "Ctrl F1", there is no default function to make the field help apear based in a onHover event.
Let me know if the answer solve your problem.