The above image is a pagelist in progress. The work has a repeating pattern of:

1. Incrementally numbered page
2. unnumbered image page
3. blank page
4. blank page

broken only by a change of volume.

The markup repeats in blocks like:

160="35"
161="img"
162to163="—"

It would be very convenient if the widget could detect this, and then would mark up the rest of the page (semi-)automatically.

Failing that (or additionally), the user should be able to multi-select pages such as those shown as numbered 38 (also highlighted), 39, 42, 43, 46, 47, etc, and then select from a menu to mark them all as "—" in one edit; then select and mark 37, 41, 45, 49, etc. as "img", and so on.

The index in question is https://en.wikisource.org/wiki/Index:Harmonia_ruralis_(Bolton,_1794)_(IA_harmoniaruraliso00bolt).pdf