I've been looking for something like this for 3.7, and this mod actually still works beautifully although the installation requires a bit more work.
The change to forums.php is the same, and the template edits are still done the same way.
However, the PHP installer no longer worked, so had to manually run the database query from the forummarkupinstall.php
PHP Code:
ALTER TABLE `forum`
ADD `opentag` VARCHAR(100) NOT NULL AFTER `description`,
ADD `closetag` VARCHAR(100) NOT NULL AFTER `opentag`
Then add the needed phrase. (using Phrase Manager under the Languages & Phrases menu)
Code:
varname = forum_markup
Text = 'Forum HTML Markup <dfn>(Specify an opening and closing HTML tag with which to display the titles of forums. This applies to titles that appear in forumhome, forumdisplay, etc...)</dfn>'
Finally needed to create new plugins, so that vb will recognize the fields as valid and not spit up a big mess of error code when you try to edit a forum:
Hook Location: forumdata_start
PHP Code:
$this->validfields['opentag'] = array(TYPE_STR, REQ_NO);
$this->validfields['closetag'] = array(TYPE_STR, REQ_NO);