E.g. if you have a manual with multiple languages (lots of pages), and you want to save just your native language pages into a new manual.
I'm currently using the Save to PDF printing feature, but not sure if it's the same thing, i.e., cropping pages from the original pdf. I have no idea how the Save to PDF works under the hood. Text find seems to work in the new pdf file, so I guess it's at least close enough.
Would be easier/faster to have the page range selector (e.g. 1, 3, 5-32) directly in the file save dialog.