How to have one item at top, unspecified items sorted a-z in the middle, and one item at the bottom?

[ngoomie]

I'm writing manual sorting rules for my folders, and I have folders where I want one file or folder at the top, one at the bottom, and then any unspecified files to be sandwiched in between those two, sorted alphabetically. So far I've been using this:

sorting-spec: |
  target-folder: .
  Overview (Flora and Fauna)
  < a-z
  Taxa Lists

But as you can expect since I'm making a post here, this isn't working. It just puts the unspecified files at the bottom of the list after the two specified files/folders. Is there something else I can do to achieve this or am I going to have to manually sort everything else in this folder too?

[ngoomie]

Wow I JUST realized I totally missed the solution in the expanded README. It's this:

sorting-spec: |
  target-folder: .
  Overview (Flora and Fauna)
  %
  Taxa Lists