/usr/share/dx/samples/macros/ is in dxsamples 4.4.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/dx/samples/macros/ArrangeMemberMacro.net
/usr/share/dx/samples/macros/AutoScaleMacro.net
/usr/share/dx/samples/macros/BandColorsMacro.net
/usr/share/dx/samples/macros/BarChartMacro.net
/usr/share/dx/samples/macros/CappedIsoMacro.net
/usr/share/dx/samples/macros/ClipSurfaceMacro.net
/usr/share/dx/samples/macros/ClipVolumeMacro.net
/usr/share/dx/samples/macros/ConvertColorNameListMacro.net
/usr/share/dx/samples/macros/DrapeMacro.net
/usr/share/dx/samples/macros/ExportVRML.net
/usr/share/dx/samples/macros/FactorialMacro.net
/usr/share/dx/samples/macros/FormatListMacro.net
/usr/share/dx/samples/macros/GetCategoricalLabelsMacro.net
/usr/share/dx/samples/macros/GetEventsMacro.net
/usr/share/dx/samples/macros/Image2Macro.net
/usr/share/dx/samples/macros/InsetImageMacro.net
/usr/share/dx/samples/macros/InterpolateCameraMacro.net
/usr/share/dx/samples/macros/InterpolatePositionsMacro.net
/usr/share/dx/samples/macros/KeyFrameCameraMacro.net
/usr/share/dx/samples/macros/MOS_statesMacro.net
/usr/share/dx/samples/macros/Make3DFieldMacro.net
/usr/share/dx/samples/macros/MakeLineMacro.net
/usr/share/dx/samples/macros/MapOnStatesMacro.net
/usr/share/dx/samples/macros/MatteMacro.net
/usr/share/dx/samples/macros/PickPlotMacro.net
/usr/share/dx/samples/macros/UnsquishGlyphMacro.net
/usr/share/dx/samples/macros/WindBarbsMacro.net