How to set WPS Presentation the default Powerpoint program in Debian X11?

There is no menu option for the default powerpoint program in Details > Default Applications in Debian Linux, in Fig. 1. A terminal command and/or GUI tool is welcome for the task. Testing Stephen's oneliner --- Commands and their outputs $ xdg-mime query filetype test.ppt application/wps-office.ppt $ xdg-mime query default $(xdg-mime query filetype test.ppt) wps-office-wpp.desktop Testing setting up by the outptus the default ppt viewer xdg-mime default wps-office-wpp.desktop \ application/wps-office.ppt Output: no effect in opening .ppt files; other lines are not needed because VND and others are not in my system OS: Debian 9.1 Linux Powerpoint: WPS Presentation, currently LibreOffice presentation as default