Hi Fergal,
I don't believe it's possible yet.
Ranorex Studio is based on SharpDevelop, and I think this type of functionality would be inherited from SharpDevelop.
I found this same question posted on the SharpDevelop forums (
http://community.sharpdevelop.net/forums/t/11196.aspx), and it's a known feature request. The link to the feature request in the forum post is out-of-date, but this appears to be the current link,
https://github.com/icsharpcode/SharpDevelop/issues/94.
If I'm wrong about this, I'm sure someone in the Ranorex community will correct me
Hope that helps,
Gabriel