Thread:Project:Support desk/Formatting article titles

I am trying to make the titles of some pages italic. I infer that on my wiki $wgAllowDisplayTitle is on and $wgRestrictDisplayTitle is off because DISPLAYTITLE allows me to make titles start with a lower-case letter, but won't allow random extra letters. I thought that DISPLAYTITLE would allow formatting in this circumstance, but it does not (neither through apostrophes nor html tags). How can I allow formatting of titles without allowing non-canon titles, the way that Wikipedia now does? If it's relivant, I'm using the Gumax skin. Thank you.