Over time I’ve created, and forgotten about, Custom Paragraph Styles I’ve created for a book I wrote. Now I want to purge the document of all custom styles that I never used, but I haven’t found a way to locate them, without a tedious perusal of over 330 pages!
Also, now that I’ve finished my book, I want to make sure all the fonts I used are Public Domain, which means going through each Custom Style [there are many], and finding where each is being used, so, if the font needs to be changed, I can make a gratifying substitution. Hence my interest in purging unused custom styles.
Does anyone know of a way to search based on Paragraph Style [“Page Style” is in the list of Search-And-Replace Attributes, but not Paragraph Style — which seems odd to me], or some other way to make this association?
Otherwise I’ll fall back on my “plan B” and save the thing in XML, and search that 
] and doesn’t require the installation of an extension. But, heck, I really like the extension!