diff --git a/src/Mod/Fem/App/FemConstraintFluidBoundary.cpp b/src/Mod/Fem/App/FemConstraintFluidBoundary.cpp
index 55f771045d..a2b48693a0 100644
--- a/src/Mod/Fem/App/FemConstraintFluidBoundary.cpp
+++ b/src/Mod/Fem/App/FemConstraintFluidBoundary.cpp
@@ -103,7 +103,7 @@ ConstraintFluidBoundary::ConstraintFluidBoundary()
     Points.setValues(std::vector<Base::Vector3d>());
     ADD_PROPERTY_TYPE(DirectionVector,(Base::Vector3d(0,0,1)),"FluidBoundary",App::PropertyType(App::Prop_ReadOnly|App::Prop_Output),
                       "Direction of arrows");
-    naturalDirectionVector = Base::Vector3d(0,0,0); // by default use the null vector to indication an invalid value
+    naturalDirectionVector = Base::Vector3d(0,0,0); // by default use the null vector to indicate an invalid value
     // property from: FemConstraintFixed object
     ADD_PROPERTY_TYPE(Normals,(Base::Vector3d()),"FluidBoundary",App::PropertyType(App::Prop_ReadOnly|App::Prop_Output),
                       "Normals where symbols are drawn");
diff --git a/src/Mod/Fem/App/FemConstraintForce.cpp b/src/Mod/Fem/App/FemConstraintForce.cpp
index 47e92db563..6f07bf4275 100644
--- a/src/Mod/Fem/App/FemConstraintForce.cpp
+++ b/src/Mod/Fem/App/FemConstraintForce.cpp
@@ -52,7 +52,7 @@ ConstraintForce::ConstraintForce()
                       "Points where arrows are drawn");
     ADD_PROPERTY_TYPE(DirectionVector,(Base::Vector3d(0,0,1)),"ConstraintForce",App::PropertyType(App::Prop_ReadOnly|App::Prop_Output),
                       "Direction of arrows");
-    naturalDirectionVector = Base::Vector3d(0,0,0); // by default use the null vector to indication an invalid value
+    naturalDirectionVector = Base::Vector3d(0,0,0); // by default use the null vector to indicate an invalid value
     Points.setValues(std::vector<Base::Vector3d>());
 }
 
diff --git a/src/Mod/Fem/App/FemMesh.cpp b/src/Mod/Fem/App/FemMesh.cpp
index f521c95072..f4f76cbbe4 100644
--- a/src/Mod/Fem/App/FemMesh.cpp
+++ b/src/Mod/Fem/App/FemMesh.cpp
@@ -1347,7 +1347,6 @@ void FemMesh::writeABAQUS(const std::string &Filename, int elemParam, bool group
                 for (std::vector<int>::const_iterator jt = order.begin(); jt != order.end(); ++jt)
                     apair.second.push_back(aFace->GetNode(*jt)->GetID());
                 elementsMapFac[it->second].insert(apair);
-
             }
         }
     }
@@ -1446,7 +1445,7 @@ void FemMesh::writeABAQUS(const std::string &Filename, int elemParam, bool group
             anABAQUS_Output << "*Element, TYPE=" << it->first << ", ELSET=Evolumes" << std::endl;
             for (NodesMap::iterator jt = it->second.begin(); jt != it->second.end(); ++jt) {
                 anABAQUS_Output << jt->first;
-                // Calculix allows max 16 enntries in one line, an hexa20 has more !
+                // Calculix allows max 16 entries in one line, a hexa20 has more !
                 int ct = 0;  // counter
                 bool first_line = true;
                 for (std::vector<int>::iterator kt = jt->second.begin(); kt != jt->second.end(); ++kt, ++ct) {
diff --git a/src/Mod/Fem/App/FemMeshPy.xml b/src/Mod/Fem/App/FemMeshPy.xml
index 92ffe42d20..93e1ade7aa 100755
--- a/src/Mod/Fem/App/FemMeshPy.xml
+++ b/src/Mod/Fem/App/FemMeshPy.xml
@@ -16,7 +16,7 @@
         </Documentation>
         <Methode Name="setShape">
             <Documentation>
-                <UserDocu>set the Part shape to mesh</UserDocu>
+                <UserDocu>Set the Part shape to mesh</UserDocu>
             </Documentation>
         </Methode>
         <Methode Name="compute">
@@ -61,17 +61,17 @@
         </Methode>
         <Methode Name="read">
             <Documentation>
-                <UserDocu>Read in an DAT, UNV, MED or STL file.</UserDocu>
+                <UserDocu>Read in a DAT, UNV, MED or STL file.</UserDocu>
             </Documentation>
         </Methode>
         <Methode Name="write" Const="true">
             <Documentation>
-                <UserDocu>write out an DAT, UNV, MED or STL file.</UserDocu>
+                <UserDocu>Write out a DAT, UNV, MED or STL file.</UserDocu>
             </Documentation>
         </Methode>
         <Methode Name="writeABAQUS" Const="true">
             <Documentation>
-                <UserDocu>write out as ABAQUS inp
+                <UserDocu>Write out as ABAQUS inp
                     writeABAQUS(file, int elemParam, bool groupParam)
                     elemParam: 0 = all elements, 1 = highest elements only, 2 = FEM elements only (only edges not belonging to faces and faces not belonging to volumes)
                     groupParam: true = write group data, false = do not write group data
@@ -105,7 +105,7 @@
         </Methode>
         <Methode Name="getNodeById" Const="true">
             <Documentation>
-                <UserDocu>Get the node position vector by an Node-ID</UserDocu>
+                <UserDocu>Get the node position vector by a Node-ID</UserDocu>
             </Documentation>
         </Methode>
         <Methode Name="getNodesBySolid" Const="true">
diff --git a/src/Mod/Fem/femsolver/calculix/writer.py b/src/Mod/Fem/femsolver/calculix/writer.py
index 74a4f9c7a4..845613ca0c 100644
--- a/src/Mod/Fem/femsolver/calculix/writer.py
+++ b/src/Mod/Fem/femsolver/calculix/writer.py
@@ -463,8 +463,8 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
         f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
         # info about self.constraint_conflict_nodes:
         # is used to check if MPC and constraint fixed and constraint displacement share same nodes,
-        # because MPC's and constriants fixed an constraints displacement can't share same nodes.
-        # thus call write_node_sets_constraints_planerotation has to be after constraint fixed and constraint displacement
+        # because MPC's and constriants fixed and constraints displacement can't share same nodes.
+        # Thus call write_node_sets_constraints_planerotation has to be after constraint fixed and constraint displacement
         for femobj in self.planerotation_objects:  # femobj --> dict, FreeCAD document object is femobj['Object']
             l_nodes = femobj['Nodes']
             fric_obj = femobj['Object']