Thread:Project:Support desk/Two questions regarding edit forms/reply

If you just want to change the text for your own wiki, you can edit the relevant system message in the MediaWiki amespace. To find the right message to edit, you can use Special:AllMessages on your wiki, or alternatively, use the procedure outlined at qqx. See https://www.mediawiki.org/w/index.php?title=Project:Sandbox&action=edit&section=new&uselang=qqx for an example "qqx" URL, which tells you that the page you need to edit on your wiki to edit the "Subject/headline" message is MediaWiki:Subject.

As for the second issue, if you pass the information in a hidden form field, the user will still be able to see the information by viewing the HTML source of the edit page. Couldn't you simply fetch the relevant information in the EditPage::attemptSave hook, and do all the processing internally?