"..., sort=template, ..."or
"..., sort=template.name, ..."
for sorting the pages by their template name in selectors result.
When it will be useful:
1. My clients were asking to display the professors first, then doctors, then students in the paginated staff list.
2. Other clients requested to display products pages first in the site search results.
I know I could use two search selectors and to concatenate their PageArrays but it will be more complicated with the pagination. I could use a dropdown with "search in products", "search in site" too.