finding character format overrides & converting to paragraph tags

[Robert Lauriston]

I'm cleaning up a >1000-page book. Anybody have a trick for finding
character format overrides, particularly those where the writer used
Ctrl+i or Ctrl+b instead of applying a character tag?

Using Find/Replace / Character Format / Shift+F8 / Weight=Bold or
Angle=Italic isn't helpful since it finds both properly tagged and
format-overridden text.