.WACOMXS File

The wacomxs file extension is associated with Bamboo Paper, software for Microsoft Windows and Apple Mac OS X (macOS) operating systems, developed by Wacom Company.

The wacomxs file stores expert settings for Bamboo Paper.

How to open:

It doesn't seem these files are meant to be opened directly, they are settings.

How to convert:

Settings files are generally not meant to be converted to anything else.