Nope, I just don't get it.

OK as an experiment, I have just created various files of various types in them.
They all contains some nonsense text (in this case I added the text string "ERIKKK#3").

I then searched for the text "ERIKKK#3" using Windows's File Explorer
Windows found all of the following files:
- the .TXT file
- the .HTML file
- the .DOCX file
- the .PDF file
- the .XLSX file
- the .PPTX file (PowerPoint)
- the .mmap file (MindManager)

So, look, if Microsoft Powerpoint can be indexed/searched, why can't Xara Designer files?
Even MindManager (by Mindjet) file can be searched!

J


PS By the way, in my life PowerPoint is the dominant competitor to Xara for general-purpose creation of illustrations. Basically everyone in business has the Microsoft Office suite (which is why Microsoft has a Market Cap of $1.54 TRILLION), and almost nobody has even heard of Xara. So when working on a shared project everyone defaults to PowerPoint.

Please don't give me yet another reason why I should use PowerPoint and not Xara Designer.