I love working with styles, of which I've built up quite a few handy ones
over the years (They accumulate in my always-hidden "Personal" workbook).
However, I often inherit workbooks from others with way too many styles due
to merging of parts from other files.

I wish to find a way of choosing obsolete styles (I recently had a workbook
with about ten different "Normal" styles for instance) and deleting them at
once. The alternative is unbelievably tedious... Selecting and deleting them
one by one through the /Format/Style-menu...

Why do I want to delete the obsoltete ones? When there's a growing list of
about fifty plus and I just want to work with my own styles "Annual" or "Zero
totals" it is highly frustrating every time negotiating such a long list...