Included Pages are Collapsable

When a page is included it is included within a division that is collapsable.

The following is a test that demonstrates how this works.
script
start Page Builder
line included
page IncludedPage
script
start Page Builder
line before
line &bang;include IncludedPage
line after
page IncludingPage
Response Requester.
uri valid? contents?
IncludingPage true
Response Examiner.
type pattern matches? value
contents class="collapsible" true