/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/ is in tix 8.4.3-7.
This file is owned by root:root, with mode 0o755.
..
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/10Point.fs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/10Point.fsc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/12Point.fs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/12Point.fsc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/14Point.fs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/14Point.fsc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/Bisque.cs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/Bisque.csc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/Blue.cs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/Blue.csc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/Gray.cs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/Gray.csc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/Old12Pt.fs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/Old14Pt.fs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/SGIGray.cs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/SGIGray.csc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TK.cs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TK.csc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TK.fs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TK.fsc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TixGray.cs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TixGray.csc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TkWin.cs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TkWin.csc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TkWin.fs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/TkWin.fsc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/WmDefault.cs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/WmDefault.csc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/WmDefault.fs
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/WmDefault.fsc
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/WmDefault.py
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/WmDefault.tcl
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/WmDefault.txt
/usr/share/tcltk/tcl8.6/Tix8.4.3/pref/pkgIndex.tcl