browse through regions

We do need a UI tool to browse through the regions of a part. I have seen many examples where regions are so small or hidden under other points of another region that it is impossible or really hard to attain them individually. This could be a column with region numbers next to the line numbers in the textannotation panel, which are associated with these regions. This would also allow to check whether there are empty regions. Clicking on one of these region numbers would select that specific region that could then be deleted or modified or whatever.