The inputbox extension ([[m:Help:Inputbox]]) includes an "editintro" parameter:

"The text of the page under this title will be added, as instructions, before
the submission form for new pages or comments."

Unfortunately, it is only functional with nonexistent pages. This request is to
enable the editintro feature for existent pages. Many pages at Wikipedia, such
as [[Current events]], include fairly lengthy HTML comments at the top to
instruct newcomers on how to edit the page correctly. This feature would
eliminate the need for lengthly comments like that and make it possible to
include wikilinks in the instructions. The dynamic navigation bar code in
[[MediaWiki:Monobook.js]] would allow experienced users to collapse the
instructions.

The Vietnamese Wikipedia would make extensive use of this feature, such as with
the templates currently transcluded onto our main page, because we currently
provide "Update" links on the front page to make it easy for everyone to keep
things up-to-date.

Version: unspecified
Severity: normal