pre_page

Name a custom subroutine to run immediately after Variable substitution, and before Interchange tag interpolation.

Value

the parameter is expected to be the name of a Sub or a GlobalSub.  There is no default value.

Description

This pragma names a Sub or a GlobalSub that will be run immediately after the Variable substitution, and before any Interchange tags are interpolated on the page.  A reference to the page content is passed to the subroutine.