diff --git a/~diff b/~diff
deleted file mode 100644
index fe4dd2beb7..0000000000
--- a/~diff
+++ /dev/null
@@ -1,104 +0,0 @@
-diff --git a/src/Mod/Fem/femtest/data/ccx/canti_ccx_faceload_hexa20.inp b/src/Mod/Fem/femtest/data/ccx/canti_ccx_faceload_hexa20.inp
-index bbc16785e6..f99a670b09 100644
---- a/src/Mod/Fem/femtest/data/ccx/canti_ccx_faceload_hexa20.inp
-+++ b/src/Mod/Fem/femtest/data/ccx/canti_ccx_faceload_hexa20.inp
-@@ -346,7 +346,7 @@ Evolumes
- Evolumes
- 
- ***********************************************************
--** Node sets for fixed constraint
-+** constraints fixed node sets
- ** written by write_node_sets_constraints_fixed function
- ** ConstraintFixed
- *NSET,NSET=ConstraintFixed
-diff --git a/src/Mod/Fem/femtest/data/ccx/constraint_contact_shell_shell.inp b/src/Mod/Fem/femtest/data/ccx/constraint_contact_shell_shell.inp
-index cb2763d1b3..d4bc2c111e 100644
---- a/src/Mod/Fem/femtest/data/ccx/constraint_contact_shell_shell.inp
-+++ b/src/Mod/Fem/femtest/data/ccx/constraint_contact_shell_shell.inp
-@@ -22999,7 +22999,7 @@ Efaces
- Efaces
- 
- ***********************************************************
--** Node sets for fixed constraint
-+** constraints fixed node sets
- ** written by write_node_sets_constraints_fixed function
- ** ConstraintFixed
- *NSET,NSET=ConstraintFixed
-diff --git a/src/Mod/Fem/femtest/data/ccx/constraint_contact_solid_solid.inp b/src/Mod/Fem/femtest/data/ccx/constraint_contact_solid_solid.inp
-index 718c6ab8b1..26d50fcacc 100644
---- a/src/Mod/Fem/femtest/data/ccx/constraint_contact_solid_solid.inp
-+++ b/src/Mod/Fem/femtest/data/ccx/constraint_contact_solid_solid.inp
-@@ -4320,7 +4320,7 @@ Evolumes
- Evolumes
- 
- ***********************************************************
--** Node sets for fixed constraint
-+** constraints fixed node sets
- ** written by write_node_sets_constraints_fixed function
- ** ConstraintFixed
- *NSET,NSET=ConstraintFixed
-diff --git a/src/Mod/Fem/femtest/data/ccx/constraint_tie.inp b/src/Mod/Fem/femtest/data/ccx/constraint_tie.inp
-index 8ee42ed0b9..9f9360f387 100644
---- a/src/Mod/Fem/femtest/data/ccx/constraint_tie.inp
-+++ b/src/Mod/Fem/femtest/data/ccx/constraint_tie.inp
-@@ -18535,7 +18535,7 @@ Evolumes
- Evolumes
- 
- ***********************************************************
--** Node sets for fixed constraint
-+** constraints fixed node sets
- ** written by write_node_sets_constraints_fixed function
- ** ConstraintFixed
- *NSET,NSET=ConstraintFixed
-diff --git a/src/Mod/Fem/femtest/data/ccx/mat_multiple.inp b/src/Mod/Fem/femtest/data/ccx/mat_multiple.inp
-index 8bdc2c489f..aa87ef3771 100644
---- a/src/Mod/Fem/femtest/data/ccx/mat_multiple.inp
-+++ b/src/Mod/Fem/femtest/data/ccx/mat_multiple.inp
-@@ -1166,7 +1166,7 @@ Evolumes
- 148,
- 
- ***********************************************************
--** Node sets for fixed constraint
-+** constraints fixed node sets
- ** written by write_node_sets_constraints_fixed function
- ** ConstraintFixed
- *NSET,NSET=ConstraintFixed
-diff --git a/src/Mod/Fem/femtest/data/ccx/mat_nonlinear.inp b/src/Mod/Fem/femtest/data/ccx/mat_nonlinear.inp
-index a0a36a3cf9..349f0b98c5 100644
---- a/src/Mod/Fem/femtest/data/ccx/mat_nonlinear.inp
-+++ b/src/Mod/Fem/femtest/data/ccx/mat_nonlinear.inp
-@@ -19779,7 +19779,7 @@ Evolumes
- Evolumes
- 
- ***********************************************************
--** Node sets for fixed constraint
-+** constraints fixed node sets
- ** written by write_node_sets_constraints_fixed function
- ** ConstraintFixed
- *NSET,NSET=ConstraintFixed
-diff --git a/src/Mod/Fem/femtest/data/ccx/spine_thermomech.inp b/src/Mod/Fem/femtest/data/ccx/spine_thermomech.inp
-index 210cadd779..2f5113e35b 100644
---- a/src/Mod/Fem/femtest/data/ccx/spine_thermomech.inp
-+++ b/src/Mod/Fem/femtest/data/ccx/spine_thermomech.inp
-@@ -78,7 +78,7 @@ Evolumes
- Evolumes
- 
- ***********************************************************
--** Node sets for fixed constraint
-+** constraints fixed node sets
- ** written by write_node_sets_constraints_fixed function
- ** FemConstraintFixed
- *NSET,NSET=FemConstraintFixed
-diff --git a/src/Mod/Fem/femtest/data/ccx/thermomech_bimetall.inp b/src/Mod/Fem/femtest/data/ccx/thermomech_bimetall.inp
-index b98472ac71..eb2d2d2bca 100644
---- a/src/Mod/Fem/femtest/data/ccx/thermomech_bimetall.inp
-+++ b/src/Mod/Fem/femtest/data/ccx/thermomech_bimetall.inp
-@@ -6114,7 +6114,7 @@ Evolumes
- 2930,
- 
- ***********************************************************
--** Node sets for fixed constraint
-+** constraints fixed node sets
- ** written by write_node_sets_constraints_fixed function
- ** ConstraintFixed
- *NSET,NSET=ConstraintFixed