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https://docs.oracle.com/cd/E19683-01/816-1324/auto33/index.html Modifying the Xfontsel Application (ToolTalk User's Guide) modifying application user guide https://archlinux.org/packages/extra/x86_64/xorg-xfontsel/sonames/ Arch Linux - xorg-xfontsel 1.1.1-2 (x86_64) - File List arch linux xorg file list