I frequently use rsync and robocopy to back up my data across multiple systems; it will typically go from my Windows PC at work to the backup (Linux) server, and thence through my Mac laptop at home to my Apple Time Capsule NAS. I've noticed that accented characters in filenames are causing problems for the second stage of this process; files are failing to back up because rsync cannot handle the accented characters in the file names. Since we currently have only two such files in the XML markup, I've decided to avoid the problem rather than solve it, by changing those filenames (and the associated xml:id attributes on their root elements) to ASCII representations. This has no consequences for anything except the file systems, but it keeps everything simple and it'll make backups more reliable.