/usr/share/ElmerGUI/edf-extra/ is in elmer-common 6.1.0.svn.5396.dfsg-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ElmerGUI/edf-extra/advection-diffusion.xml
/usr/share/ElmerGUI/edf-extra/divergencesolver.xml
/usr/share/ElmerGUI/edf-extra/elasticplate.xml
/usr/share/ElmerGUI/edf-extra/electrostatics.xml
/usr/share/ElmerGUI/edf-extra/fluxsolver.xml
/usr/share/ElmerGUI/edf-extra/freesurface.xml
/usr/share/ElmerGUI/edf-extra/heatequation.xml
/usr/share/ElmerGUI/edf-extra/helmholtz.xml
/usr/share/ElmerGUI/edf-extra/k-epsilon.xml
/usr/share/ElmerGUI/edf-extra/linearelasticity.xml
/usr/share/ElmerGUI/edf-extra/meshdeform.xml
/usr/share/ElmerGUI/edf-extra/navier-stokes.xml
/usr/share/ElmerGUI/edf-extra/nonlinearelasticity.xml
/usr/share/ElmerGUI/edf-extra/poissonboltzmann.xml
/usr/share/ElmerGUI/edf-extra/resultoutput.xml
/usr/share/ElmerGUI/edf-extra/reynolds.xml
/usr/share/ElmerGUI/edf-extra/richards.xml
/usr/share/ElmerGUI/edf-extra/saveline.xml
/usr/share/ElmerGUI/edf-extra/savescalars.xml
/usr/share/ElmerGUI/edf-extra/statcurrent.xml
/usr/share/ElmerGUI/edf-extra/vorticitysolver.xml