The edit in
sets the auto-summary funtion to delete pages, but it works only in pages less
than 500 chars long. Since it crops the text into 150 characters, it'd be better
to remove the 500 chars limit, since it would also be useful in longer pages.
For exemple, the speedy delete tags in portuguese wikipedia are used as the
beginning of the deletion summary, as well as the first words of text. If the
page is too long, the edit summary doesnt appear and one has to edit the page
prior to deleting it, in order to get the info.
On the other hand, if the editor who marks the page for deletion erases the
previous text in order to let the auto summary to be properly generated, the
admin who's going to delete the page has to check the history first, so he can
validate the reason for deletion.
Both these methods are workaroudnds that wouldnt have to be done if the 500
limit was removed.