I have a Word document with a load of tags in the form {xe "index entry 1"}{xe "index entry 2"}. They correspond to entries in the index.

However, these tags are badly formatted, and I need to change the font name and size of each tag (I know they don't print out or show up with hidden text switched off, but I use them for an intermediate purpose).
I'm trying to find a way to select each tag in turn and change its formatting, but no combination of search terms and regexps succesfully finds them.
I don't know if Word considers these as objects, as I can't find a member class called IndexEntry or CrossReference or anything similar. I tried with Bookmarks, but those are not the same thing.

Has anyone any tips?