diff --git a/precision_drawing_tools/__init__.py b/precision_drawing_tools/__init__.py
index bb0245dc87c8176b8d5eb5232a6266ded43f258e..7adb7c1af7de8dbb11ce66a96aa44d7a63dcafb8 100644
--- a/precision_drawing_tools/__init__.py
+++ b/precision_drawing_tools/__init__.py
@@ -359,9 +359,9 @@ class PDTSceneProperties(PropertyGroup):
         name="Pivot Factor", min=0.4, max=10, default=2, precision=1, description=PDT_DES_PPSIZE
     )
     pivot_width: IntProperty(name="Width", min=1, max=5, default=2, description=PDT_DES_PPWIDTH)
-    # FIXME: might as well become pivot_angle
+
     pivot_ang: FloatProperty(name="Pivot Angle", min=-180, max=180, default=0.0)
-    # FIXME: pivot_dist for consistency?
+
     pivot_dis: FloatProperty(
         name="Pivot Dist", default=0.0, min=0, update=scale_set, description=PDT_DES_PIVOTDIS,
     )
diff --git a/precision_drawing_tools/pdt_cad_module.py b/precision_drawing_tools/pdt_cad_module.py
index 74153a1d968f4f077eda0ed693efc9d5cdadfedc..fc1d46337b143a1761be3d8a6088027dbebb5c49 100644
--- a/precision_drawing_tools/pdt_cad_module.py
+++ b/precision_drawing_tools/pdt_cad_module.py
@@ -37,7 +37,7 @@ def point_on_edge(point, edge):
         edge:     tuple containing 2 vectors.
 
     Returns:
-        True if point p happens to lie on the edge, False otherwise.
+        True if point happens to lie on the edge, False otherwise.
     """
 
     intersect_point, _percent = intersect_point_line(point, *edge)
@@ -48,7 +48,8 @@ def point_on_edge(point, edge):
 def line_from_edge_intersect(edge1, edge2):
     """Get New Line from Intersections.
 
-    Prepares input for sending to intersect_line_line
+    Note:
+        Prepares input for sending to intersect_line_line
 
     Args:
         edge1, edge2: tuples containing 2 vectors.
@@ -82,9 +83,10 @@ def get_intersection(edge1, edge2):
 def test_coplanar(edge1, edge2):
     """Test 2 Edges are Co-planar.
 
-    The line that describes the shortest line between the two edges would be short if the
-    lines intersect mathematically. If this line is longer than 1.0e-5 then they are either
-    coplanar or parallel
+    Note:
+        The line that describes the shortest line between the two edges would be short if the
+        lines intersect mathematically. If this line is longer than 1.0e-5 then they are either
+        coplanar or parallel
 
     Args:
         edge1, edge2: tuples containing 2 vectors.
@@ -102,7 +104,8 @@ def test_coplanar(edge1, edge2):
 def closest_idx(intersect_point, edge):
     """Get Closest Vertex to input point.
 
-    If both points in edge are equally far from intersect_point, then v1 is returned.
+    Note:
+        If both points in edge are equally far from intersect_point, then v1 is returned.
 
     Args:
         intersect_point:       vector
@@ -126,7 +129,8 @@ def closest_idx(intersect_point, edge):
 def closest_vector(intersect_point, edge):
     """Return Closest Vector to input Point.
 
-    If both points in e are equally far from intersect_point, then v1 is returned.
+    Note:
+        If both points in e are equally far from intersect_point, then v1 is returned.
 
     Args:
         intersect_point:       vector
@@ -177,7 +181,7 @@ def vertex_indices_from_edges_tuple(bm, edge_tuple):
     """Return List of vertices.
 
     Args:
-        bm:           is a bmesh representation
+        bm:           Active object's Bmesh
         edge_tuple:   contains 2 edge indices.
 
     Returns:
@@ -228,7 +232,7 @@ def find_intersecting_edges(bm, intersect_point, idx1, idx2):
 
     Args:
         intersect_point: Vector describing 3D coordinates of intersection point
-        idx1, ix2:    edge indices
+        idx1, idx2:    edge indices
 
     Returns:
         The list of edge indices where intersect_point is on those edges.
@@ -245,8 +249,8 @@ def vert_idxs_from_edge_idx(bm, idx):
     """Find Vertex Indices form Edge Indices.
 
     Args:
-        Object Bmesh as bm
-        Selection Index as idx
+        bm: Object's Bmesh
+        idx: Selection Index
 
     Returns:
         Vertex Indices of Edge.
diff --git a/precision_drawing_tools/pdt_command.py b/precision_drawing_tools/pdt_command.py
index ad0f35289fe69cb76c2e8328c3027b6e696b0032..2ed6d57d75fc4a2e9a9404dfea8bd3c4fe1a6aaa 100644
--- a/precision_drawing_tools/pdt_command.py
+++ b/precision_drawing_tools/pdt_command.py
@@ -99,9 +99,6 @@ class PDT_OT_CommandReRun(Operator):
 def command_run(self, context):
     """Run Command String as input into Command Line.
 
-    Args:
-        context: Blender bpy.context instance.
-
     Note:
         Uses pg.command, pg.error & many other 'pg.' variables to set PDT menu items,
         or alter functions
@@ -124,7 +121,7 @@ def command_run(self, context):
 
             A = Absolute XYZ, D = Delta XYZ, I = Distance at Angle, P = Percent
             X = X Delta, Y = Y, Delta Z, = Z Delta, O = Output (Maths Operation only)
-            V = Vertex Bevel, E = Edge Bevel
+            V = Vertex Bevel, E = Edge Bevel, I = Intersect then Bevel
 
             Capitals and lower case letters are both allowed
 
@@ -134,11 +131,14 @@ def command_run(self, context):
 
             Example; CA,,3 - Cursor to Absolute, is re-interpreted as CA0,0,3
 
-            Exception for Maths Operation, Values section is evaluated as Maths command
+            Exception for Maths Operation, Values section is evaluated as Maths expression
 
             Example; madegrees(atan(3/4)) - sets PDT Angle to smallest angle of 3,4,5 Triangle;
             (36.8699 degrees)
 
+    Args:
+        context: Blender bpy.context instance.
+
     Returns:
         Nothing.
     """
@@ -308,7 +308,6 @@ def pdt_help(self, context):
     """Display PDT Command Line help in a pop-up.
 
     Args:
-        Self: Itself as a reference for action
         context: Blender bpy.context instance
 
     Returns:
@@ -410,8 +409,8 @@ def command_parse(context):
         pg: PDT Parameters Group - our variables
         values_out: The Output Values as a list of numbers
         obj: The Active Object
-        obj_loc: The objects location in 3D space
-        bm: The objects Bmesh
+        obj_loc: The object's location in 3D space
+        bm: The object's Bmesh
         verts: The object's selected vertices, or selected history vertices.
     """
     scene = context.scene
@@ -433,10 +432,13 @@ def command_parse(context):
     # Apply System Rounding
     decimal_places = context.preferences.addons[__package__].preferences.pdt_input_round
     values_out = [str(round(float(v), decimal_places)) for v in values]
-    bm = "None"
+    bm = "No Bmesh"
     obj_loc = Vector((0,0,0))
     verts = []
 
+    if mode_sel == 'REL' and operation not in {"C", "P"}:
+        pg.select = 'SEL'
+
     if mode_sel == 'SEL' and mode not in {"a"}:
         bm, good = obj_check(obj, scene, operation)
         if good and obj.mode == 'EDIT':
@@ -466,7 +468,7 @@ def move_cursor_pivot(context, pg, operation, mode, obj, verts, values):
         mode: The Operation Mode, e.g. a for Absolute
         obj: The Active Object
         verts: The object's selected vertices, or selected history vertices
-        values: The paramters passed e.g. 1,4,3 for Catrtesan Coordinates
+        values: The parameters passed e.g. 1,4,3 for Cartesian Coordinates
 
     Returns:
         Nothing.
@@ -543,9 +545,9 @@ def move_entities(context, pg, operation, mode, obj, bm, verts, values):
         operation: The Operation e.g. Create New Vertex
         mode: The Operation Mode, e.g. a for Absolute
         obj: The Active Object
-        bm: The objects Bmesh
+        bm: The object's Bmesh
         verts: The object's selected vertices, or selected history vertices
-        values: The paramters passed e.g. 1,4,3 for Catrtesan Coordinates
+        values: The parameters passed e.g. 1,4,3 for Cartesian Coordinates
 
     Returns:
         Nothing.
@@ -666,10 +668,10 @@ def split_edges(context, pg, operation, mode, obj, obj_loc, bm, values):
         operation: The Operation e.g. Create New Vertex
         mode: The Operation Mode, e.g. a for Absolute
         obj: The Active Object
-        obj_loc: The objects location in 3D space
-        bm: The objects Bmesh
+        obj_loc: The object's location in 3D space
+        bm: The object's Bmesh
         verts: The object's selected vertices, or selected history vertices
-        values: The paramters passed e.g. 1,4,3 for Catrtesan Coordinates
+        values: The parameters passed e.g. 1,4,3 for Cartesian Coordinates
 
     Returns:
         Nothing.
@@ -770,10 +772,10 @@ def extrude_vertices(context, pg, operation, mode, obj, obj_loc, bm, verts, valu
         operation: The Operation e.g. Create New Vertex
         mode: The Operation Mode, e.g. a for Absolute
         obj: The Active Object
-        obj_loc: The objects location in 3D space
-        bm: The objects Bmesh
+        obj_loc: The object's location in 3D space
+        bm: The object's Bmesh
         verts: The object's selected vertices, or selected history vertices
-        values: The paramters passed e.g. 1,4,3 for Catrtesan Coordinates
+        values: The parameters passed e.g. 1,4,3 for Cartesian Coordinates
 
     Returns:
         Nothing.
@@ -852,8 +854,8 @@ def extrude_geometry(context, pg, operation, mode, obj, bm, values):
         operation: The Operation e.g. Create New Vertex
         mode: The Operation Mode, e.g. a for Absolute
         obj: The Active Object
-        bm: The objects Bmesh
-        values: The paramters passed e.g. 1,4,3 for Catrtesan Coordinates
+        bm: The object's Bmesh
+        values: The parameters passed e.g. 1,4,3 for Cartesian Coordinates
 
     Returns:
         Nothing.
@@ -905,8 +907,8 @@ def duplicate_geometry(context, pg, operation, mode, obj, bm, values):
         operation: The Operation e.g. Create New Vertex
         mode: The Operation Mode, e.g. a for Absolute
         obj: The Active Object
-        bm: The objects Bmesh
-        values: The paramters passed e.g. 1,4,3 for Catrtesan Coordinates
+        bm: The object's Bmesh
+        values: The parameters passed e.g. 1,4,3 for Cartesian Coordinates
 
     Returns:
         Nothing.
@@ -958,9 +960,9 @@ def fillet_geometry(context, pg, mode, obj, bm, verts, values):
         operation: The Operation e.g. Create New Vertex
         mode: The Operation Mode, e.g. a for Absolute
         obj: The Active Object
-        bm: The objects Bmesh
+        bm: The object's Bmesh
         verts: The object's selected vertices, or selected history vertices
-        values: The paramters passed e.g. 1,4,3 for Catrtesan Coordinates
+        values: The parameters passed e.g. 1,4,3 for Cartesian Coordinates
 
     Returns:
         Nothing.
@@ -972,7 +974,8 @@ def fillet_geometry(context, pg, mode, obj, bm, verts, values):
         return
     if mode in {"i", "v"}:
         vert_bool = True
-    elif mode == "e":
+    else:
+        # Must be "e"
         vert_bool = False
     # Note that passing an empty parameter results in that parameter being seen as "0"
     # _offset <= 0 is ignored since a bevel/fillet radius must be > 0 to make sense
diff --git a/precision_drawing_tools/pdt_command_functions.py b/precision_drawing_tools/pdt_command_functions.py
index 0e89154418c7033c5e7c64d0b84ffb56271b6ad0..d12036028b4ab751c33dfb659ad811566b3e0f3a 100644
--- a/precision_drawing_tools/pdt_command_functions.py
+++ b/precision_drawing_tools/pdt_command_functions.py
@@ -83,18 +83,18 @@ from .pdt_msg_strings import (
 
 
 def vector_build(context, pg, obj, operation, values, num_values):
-    """Build Movement Vector from input Fields.
+    """Build Movement Vector from Input Fields.
 
     Args:
         context: Blender bpy.context instance.
         pg: PDT Parameters Group - our variables
         obj: The Active Object
         operation: The Operation e.g. Create New Vertex
-        values: The paramters passed e.g. 1,4,3 for Catrtesan Coordinates
+        values: The paramters passed e.g. 1,4,3 for Cartesian Coordinates
         num_values: The number of values passed - determines the function
 
     Returns:
-        Vector to position, or offset items.
+        Vector to position, or offset, items.
     """
 
     scene = context.scene
@@ -495,9 +495,10 @@ def placement_intersect(context, operation):
 def join_two_vertices(context):
     """Joins 2 Free Vertices that do not form part of a Face.
 
-    Joins two vertices that do not form part of a single face
-    It is designed to close open Edge Loops, where a face is not required
-    or to join two disconnected Edges.
+    Note:
+        Joins two vertices that do not form part of a single face
+        It is designed to close open Edge Loops, where a face is not required
+        or to join two disconnected Edges.
 
     Args:
         context: Blender bpy.context instance.
@@ -535,9 +536,10 @@ def join_two_vertices(context):
 def set_angle_distance_two(context):
     """Measures Angle and Offsets between 2 Points in View Plane.
 
-    Uses 2 Selected Vertices to set pg.angle and pg.distance scene variables
-    also sets delta offset from these 2 points using standard Numpy Routines
-    Works in Edit and Oject Modes.
+    Note:
+        Uses 2 Selected Vertices to set pg.angle and pg.distance scene variables
+        also sets delta offset from these 2 points using standard Numpy Routines
+        Works in Edit and Oject Modes.
 
     Args:
         context: Blender bpy.context instance.
@@ -615,9 +617,10 @@ def set_angle_distance_two(context):
 def set_angle_distance_three(context):
     """Measures Angle and Offsets between 3 Points in World Space, Also sets Deltas.
 
-    Uses 3 Selected Vertices to set pg.angle and pg.distance scene variables
-    also sets delta offset from these 3 points using standard Numpy Routines
-    Works in Edit and Oject Modes.
+    Note:
+        Uses 3 Selected Vertices to set pg.angle and pg.distance scene variables
+        also sets delta offset from these 3 points using standard Numpy Routines
+        Works in Edit and Oject Modes.
 
     Args:
         context: Blender bpy.context instance.
@@ -684,9 +687,10 @@ def set_angle_distance_three(context):
 def origin_to_cursor(context):
     """Sets Object Origin in Edit Mode to Cursor Location.
 
-    Keeps geometry static in World Space whilst moving Object Origin
-    Requires cursor location
-    Works in Edit and Object Modes.
+    Note:
+        Keeps geometry static in World Space whilst moving Object Origin
+        Requires cursor location
+        Works in Edit and Object Modes.
 
     Args:
         context: Blender bpy.context instance.
@@ -725,10 +729,11 @@ def origin_to_cursor(context):
 def taper(context):
     """Taper Geometry along World Axes.
 
-    Similar to Shear command except that it shears by angle rather than displacement.
-    Rotates about World Axes and displaces along World Axes, angle must not exceed +-80 degrees.
-    Rotation axis is centred on Active Vertex.
-    Works only in Edit mode.
+    Note:
+        Similar to Shear command except that it shears by angle rather than displacement.
+        Rotates about World Axes and displaces along World Axes, angle must not exceed +-80 degrees.
+        Rotation axis is centred on Active Vertex.
+        Works only in Edit mode.
 
     Args:
         context: Blender bpy.context instance.
diff --git a/precision_drawing_tools/pdt_design.py b/precision_drawing_tools/pdt_design.py
index e3f91b1da475e87920cd1c5c72a989cd80be6d64..6a2e3e1fbcf2948ed7efaf79e615c446ce82be10 100644
--- a/precision_drawing_tools/pdt_design.py
+++ b/precision_drawing_tools/pdt_design.py
@@ -42,16 +42,17 @@ class PDT_OT_PlacementAbs(Operator):
     def execute(self, context):
         """Manipulates Geometry, or Objects by Absolute (World) Coordinates.
 
-        - Reads pg.operate from Operation Mode Selector as 'operation'
-        - Reads pg.cartesian_coords scene variables to:
-        -- set position of CUrsor      (CU)
-        -- set postion of Pivot Point  (PP)
-        -- MoVe geometry/objects       (MV)
-        -- Extrude Vertices            (EV)
-        -- Split Edges                 (SE)
-        -- add a New Vertex            (NV)
+        Note:
+            - Reads pg.operate from Operation Mode Selector as 'operation'
+            - Reads pg.cartesian_coords scene variables to:
+            -- set position of CUrsor      (CU)
+            -- set postion of Pivot Point  (PP)
+            -- MoVe geometry/objects       (MV)
+            -- Extrude Vertices            (EV)
+            -- Split Edges                 (SE)
+            -- add a New Vertex            (NV)
 
-        Invalid Options result in self.report Error.
+            Invalid Options result in self.report Error.
 
         Args:
             context: Blender bpy.context instance.
@@ -122,18 +123,19 @@ class PDT_OT_PlacementDelta(Operator):
     def execute(self, context):
         """Manipulates Geometry, or Objects by Delta Offset (Increment).
 
-        - Reads pg.operation from Operation Mode Selector as 'operation'
-        - Reads pg.select, pg.plane, pg.cartesian_coords scene variables to:
-        -- set position of CUrsor       (CU)
-        -- set position of Pivot Point  (PP)
-        -- MoVe geometry/objects        (MV)
-        -- Extrude Vertices             (EV)
-        -- Split Edges                  (SE)
-        -- add a New Vertex             (NV)
-        -- Duplicate Geometry           (DG)
-        -- Extrude Geometry             (EG)
-
-        Invalid Options result in self.report Error.
+        Note:
+            - Reads pg.operation from Operation Mode Selector as 'operation'
+            - Reads pg.select, pg.plane, pg.cartesian_coords scene variables to:
+            -- set position of CUrsor       (CU)
+            -- set position of Pivot Point  (PP)
+            -- MoVe geometry/objects        (MV)
+            -- Extrude Vertices             (EV)
+            -- Split Edges                  (SE)
+            -- add a New Vertex             (NV)
+            -- Duplicate Geometry           (DG)
+            -- Extrude Geometry             (EG)
+
+            Invalid Options result in self.report Error.
 
         Args:
             context: Blender bpy.context instance.
@@ -218,18 +220,19 @@ class PDT_OT_PlacementDis(Operator):
     def execute(self, context):
         """Manipulates Geometry, or Objects by Distance at Angle (Direction).
 
-        - Reads pg.operation from Operation Mode Selector as 'operation'
-        - Reads pg.select, pg.distance, pg.angle, pg.plane & pg.flip_angle scene variables to:
-        -- set position of CUrsor       (CU)
-        -- set position of Pivot Point  (PP)
-        -- MoVe geometry/objects        (MV)
-        -- Extrude Vertices             (EV)
-        -- Split Edges                  (SE)
-        -- add a New Vertex             (NV)
-        -- Duplicate Geometry           (DG)
-        -- Extrude Geometry             (EG)
-
-        Invalid Options result in self.report Error.
+        Note:
+            - Reads pg.operation from Operation Mode Selector as 'operation'
+            - Reads pg.select, pg.distance, pg.angle, pg.plane & pg.flip_angle scene variables to:
+            -- set position of CUrsor       (CU)
+            -- set position of Pivot Point  (PP)
+            -- MoVe geometry/objects        (MV)
+            -- Extrude Vertices             (EV)
+            -- Split Edges                  (SE)
+            -- add a New Vertex             (NV)
+            -- Duplicate Geometry           (DG)
+            -- Extrude Geometry             (EG)
+
+            Invalid Options result in self.report Error.
 
         Args:
             context: Blender bpy.context instance.
@@ -306,16 +309,17 @@ class PDT_OT_PlacementPer(Operator):
     def execute(self, context):
         """Manipulates Geometry, or Objects by Percentage between 2 points.
 
-        - Reads pg.operation from Operation Mode Selector as 'operation'
-        - Reads pg.percent, pg.extend & pg.flip_percent scene variables to:
-        -- set position of CUrsor       (CU)
-        -- set position of Pivot Point  (PP)
-        -- MoVe geometry/objects        (MV)
-        -- Extrude Vertices             (EV)
-        -- Split Edges                  (SE)
-        -- add a New Vertex             (NV)
+        Note:
+            - Reads pg.operation from Operation Mode Selector as 'operation'
+            - Reads pg.percent, pg.extend & pg.flip_percent scene variables to:
+            -- set position of CUrsor       (CU)
+            -- set position of Pivot Point  (PP)
+            -- MoVe geometry/objects        (MV)
+            -- Extrude Vertices             (EV)
+            -- Split Edges                  (SE)
+            -- add a New Vertex             (NV)
 
-        Invalid Options result in self.report Error.
+            Invalid Options result in self.report Error.
 
         Args:
             context: Blender bpy.context instance.
@@ -362,16 +366,17 @@ class PDT_OT_PlacementNormal(Operator):
     def execute(self, context):
         """Manipulates Geometry, or Objects by Normal Intersection between 3 points.
 
-        - Reads pg.operation from Operation Mode Selector as 'operation'
-        - Reads pg.extend scene variable to:
-        -- set position of CUrsor       (CU)
-        -- set position of Pivot Point  (PP)
-        -- MoVe geometry/objects        (MV)
-        -- Extrude Vertices             (EV)
-        -- Split Edges                  (SE)
-        -- add a New Vertex             (NV)
+        Note:
+            - Reads pg.operation from Operation Mode Selector as 'operation'
+            - Reads pg.extend scene variable to:
+            -- set position of CUrsor       (CU)
+            -- set position of Pivot Point  (PP)
+            -- MoVe geometry/objects        (MV)
+            -- Extrude Vertices             (EV)
+            -- Split Edges                  (SE)
+            -- add a New Vertex             (NV)
 
-        Invalid Options result in self.report Error.
+            Invalid Options result in self.report Error.
 
         Args:
             context: Blender bpy.context instance.
@@ -410,14 +415,15 @@ class PDT_OT_PlacementCen(Operator):
     def execute(self, context):
         """Manipulates Geometry, or Objects to an Arc Centre defined by 3 points on an Imaginary Arc.
 
-        - Reads pg.operation from Operation Mode Selector as 'operation'
-        -- set position of CUrsor       (CU)
-        -- set position of Pivot Point  (PP)
-        -- MoVe geometry/objects        (MV)
-        -- Extrude Vertices             (EV)
-        -- add a New vertex             (NV)
+        Note:
+            - Reads pg.operation from Operation Mode Selector as 'operation'
+            -- set position of CUrsor       (CU)
+            -- set position of Pivot Point  (PP)
+            -- MoVe geometry/objects        (MV)
+            -- Extrude Vertices             (EV)
+            -- add a New vertex             (NV)
 
-        Invalid Options result in self.report Error.
+            Invalid Options result in self.report Error.
 
         Args:
             context: Blender bpy.context instance.
@@ -454,17 +460,16 @@ class PDT_OT_PlacementInt(Operator):
     def execute(self, context):
         """Manipulates Geometry, or Objects by Convergance Intersection between 4 points, or 2 Edges.
 
-        - Reads pg.operation from Operation Mode Selector as 'operation'
-        - Reads pg.plane scene variable and operates in Working Plane to:
-        -- set position of CUrsor       (CU)
-        -- set position of Pivot Point  (PP)
-        -- MoVe geometry/objects        (MV)
-        -- Extrude Vertices             (EV)
-        -- add a New vertex             (NV)
-
-        Invalid Options result in "self.report" Error.
+        Note:
+            - Reads pg.operation from Operation Mode Selector as 'operation'
+            - Reads pg.plane scene variable and operates in Working Plane to:
+            -- set position of CUrsor       (CU)
+            -- set position of Pivot Point  (PP)
+            -- MoVe geometry/objects        (MV)
+            -- Extrude Vertices             (EV)
+            -- add a New vertex             (NV)
 
-        Local vector variable 'vector_delta' used to reposition features.
+            Invalid Options result in "self.report" Error.
 
         Args:
             context: Blender bpy.context instance.
@@ -508,9 +513,10 @@ class PDT_OT_JoinVerts(Operator):
     def execute(self, context):
         """Joins 2 Free Vertices that do not form part of a Face.
 
-        Joins two vertices that do not form part of a single face
-        It is designed to close open Edge Loops, where a face is not required
-        or to join two disconnected Edges.
+        Note:
+            Joins two vertices that do not form part of a single face
+            It is designed to close open Edge Loops, where a face is not required
+            or to join two disconnected Edges.
 
         Args:
             context: Blender bpy.context instance.
@@ -541,12 +547,14 @@ class PDT_OT_Fillet(Operator):
     def execute(self, context):
         """Create Fillets by Vertex or by Geometry.
 
-        Fillets connected edges, or connected faces
+        Note:
+            Fillets connected edges, or connected faces
         Uses:
-        - pg.fillet_radius  ; Radius of fillet
-        - pg.fillet_segments  ; Number of segments
-        - pg.fillet_profile  ; Profile, values 0 to 1
-        - pg.fillet_vertices_only ; Vertices (True), or Face/Edges
+            - pg.fillet_radius  ; Radius of fillet
+            - pg.fillet_segments  ; Number of segments
+            - pg.fillet_profile  ; Profile, values 0 to 1
+            - pg.fillet_vertices_only ; Vertices (True), or Face/Edges
+            - pg.fillet_intersect ; Intersect dges first (True), or not
 
         Args:
             context: Blender bpy.context instance.
@@ -588,9 +596,10 @@ class PDT_OT_Angle2(Operator):
     def execute(self, context):
         """Measures Angle and Offsets between 2 Points in View Plane.
 
-        Uses 2 Selected Vertices to set pg.angle and pg.distance scene variables
-        also sets delta offset from these 2 points using standard Numpy Routines
-        Works in Edit and Oject Modes.
+        Note:
+            Uses 2 Selected Vertices to set pg.angle and pg.distance scene variables
+            also sets delta offset from these 2 points using standard Numpy Routines
+            Works in Edit and Oject Modes.
 
         Args:
             context: Blender bpy.context instance.
@@ -614,9 +623,10 @@ class PDT_OT_Angle3(Operator):
     def execute(self, context):
         """Measures Angle and Offsets between 3 Points in World Space, Also sets Deltas.
 
-        Uses 3 Selected Vertices to set pg.angle and pg.distance scene variables
-        also sets delta offset from these 3 points using standard Numpy Routines
-        Works in Edit and Oject Modes.
+        Note:
+            Uses 3 Selected Vertices to set pg.angle and pg.distance scene variables
+            also sets delta offset from these 3 points using standard Numpy Routines
+            Works in Edit and Oject Modes.
 
         Args:
             context: Blender bpy.context instance.
@@ -640,9 +650,10 @@ class PDT_OT_Origin(Operator):
     def execute(self, context):
         """Sets Object Origin in Edit Mode to Cursor Location.
 
-        Keeps geometry static in World Space whilst moving Object Origin
-        Requires cursor location
-        Works in Edit and Object Modes.
+        Note:
+            Keeps geometry static in World Space whilst moving Object Origin
+            Requires cursor location
+            Works in Edit and Object Modes.
 
         Args:
             context: Blender bpy.context instance.
@@ -673,10 +684,11 @@ class PDT_OT_Taper(Operator):
     def execute(self, context):
         """Taper Geometry along World Axes.
 
-        Similar to Shear command except that it shears by angle rather than displacement.
-        Rotates about World Axes and displaces along World Axes, angle must not exceed +-80 degrees.
-        Rotation axis is centred on Active Vertex.
-        Works only in Edit mode.
+        Note:
+            Similar to Blender Shear command except that it shears by angle rather than displacement.
+            Rotates about World Axes and displaces along World Axes, angle must not exceed +-80 degrees.
+            Rotation axis is centred on Active Vertex.
+            Works only in Edit mode.
 
         Args:
             context: Blender bpy.context instance.
diff --git a/precision_drawing_tools/pdt_etof.py b/precision_drawing_tools/pdt_etof.py
index 2e9f84878710ca6b825c24e42450e8a287db10fa..20a00bdfb1a22a3d015e400e96e6630bec4be6e0 100644
--- a/precision_drawing_tools/pdt_etof.py
+++ b/precision_drawing_tools/pdt_etof.py
@@ -30,6 +30,7 @@ from mathutils.geometry import intersect_line_plane
 from .pdt_msg_strings import (
     PDT_ERR_NOINT,
     PDT_ERR_EDOB_MODE,
+    PDT_ERR_SEL_1_E_1_F,
 )
 from .pdt_functions import oops
 
@@ -45,7 +46,7 @@ def failure_message(context):
     """
 
     pg = context.scene.pdt_pg
-    pg.error = f"Select One Face and One Edge"
+    pg.error = f"{PDT_ERR_SEL_1_E_1_F}"
     context.window_manager.popup_menu(oops, title="Error", icon="ERROR")
 
 
diff --git a/precision_drawing_tools/pdt_functions.py b/precision_drawing_tools/pdt_functions.py
index 5ce19f0a90f2e1df455636da7d2897ba6550b8dc..3d12c4f99b6581cd92274597f239b89bce7d0339 100644
--- a/precision_drawing_tools/pdt_functions.py
+++ b/precision_drawing_tools/pdt_functions.py
@@ -45,9 +45,10 @@ PDT_ShaderError = pdt_exception.ShaderError
 def debug(msg, prefix=""):
     """Print a debug message to the console if PDT's or Blender's debug flags are set.
 
-    The printed message will be of the form:
+    Note:
+        The printed message will be of the form:
 
-    {prefix}{caller file name:line number}| {msg}
+        {prefix}{caller file name:line number}| {msg}
 
     Args:
         msg: Incomming message to display
@@ -90,14 +91,12 @@ def debug(msg, prefix=""):
 def oops(self, context):
     """Error Routine.
 
-    Displays error message in a popup.
+    Note:
+        Displays error message in a popup.
 
     Args:
         context: Blender bpy.context instance.
 
-    Note:
-        Uses pg.error scene variable
-
     Returns:
         Nothing.
     """
@@ -110,10 +109,11 @@ def oops(self, context):
 def set_mode(mode_pl):
     """Sets Active Axes for View Orientation.
 
-    Sets indices of axes for locational vectors:
-    "XY": a1 = x, a2 = y, a3 = z
-    "XZ": a1 = x, a2 = z, a3 = y
-    "YZ": a1 = y, a2 = z, a3 = x
+    Note:
+        Sets indices of axes for locational vectors:
+        "XY": a1 = x, a2 = y, a3 = z
+        "XZ": a1 = x, a2 = z, a3 = y
+        "YZ": a1 = y, a2 = z, a3 = x
 
     Args:
         mode_pl: Plane Selector variable as input
@@ -133,14 +133,13 @@ def set_mode(mode_pl):
 def set_axis(mode_pl):
     """Sets Active Axes for View Orientation.
 
-    Sets indices for axes from taper vectors
+    Note:
+        Sets indices for axes from taper vectors
+        Axis order: Rotate Axis, Move Axis, Height Axis
 
     Args:
         mode_pl: Taper Axis Selector variable as input
 
-    Note:
-        Axis order: Rotate Axis, Move Axis, Height Axis
-
     Returns:
         3 Integer Indicies.
     """
@@ -159,7 +158,8 @@ def set_axis(mode_pl):
 def check_selection(num, bm, obj):
     """Check that the Object's select_history has sufficient entries.
 
-    If selection history is not Verts, clears selection and history.
+    Note:
+        If selection history is not Verts, clears selection and history.
 
     Args:
         num: The number of entries required for each operation
@@ -253,7 +253,8 @@ def view_coords(x_loc, y_loc, z_loc):
 def view_coords_i(x_loc, y_loc, z_loc):
     """Converts Screen Oriented input Vector values to new World Vector.
 
-    Converts View tranformation Matrix to Rotational Matrix
+    Note:
+        Converts View tranformation Matrix to Rotational Matrix
 
     Args:
         x_loc: X coordinate from vector
@@ -278,8 +279,9 @@ def view_coords_i(x_loc, y_loc, z_loc):
 def view_dir(dis_v, ang_v):
     """Converts Distance and Angle to View Oriented Vector.
 
-    Converts View Transformation Matrix to Rotational Matrix (3x3)
-    Angles are Converts to Radians from degrees.
+    Note:
+        Converts View Transformation Matrix to Rotational Matrix (3x3)
+        Angles are Converts to Radians from degrees.
 
     Args:
         dis_v: Scene PDT distance
@@ -366,8 +368,11 @@ def arc_centre(vector_a, vector_b, vector_c):
 
 def intersection(vertex_a, vertex_b, vertex_c, vertex_d, plane):
     """Calculates Intersection Point of 2 Imagined Lines from 4 Vectors.
-    Calculates Converging Intersect Location and indication of
-    whether the lines are convergent using standard Numpy Routines
+
+    Note:
+       Calculates Converging Intersect Location and indication of
+       whether the lines are convergent using standard Numpy Routines
+
     Args:
         vertex_a: Active vector location of first line
         vertex_b: Second vector location of first line
@@ -426,11 +431,12 @@ def intersection(vertex_a, vertex_b, vertex_c, vertex_d, plane):
 def get_percent(obj, flip_percent, per_v, data, scene):
     """Calculates a Percentage Distance between 2 Vectors.
 
-    Calculates a point that lies a set percentage between two given points
-    using standard Numpy Routines.
+    Note:
+        Calculates a point that lies a set percentage between two given points
+        using standard Numpy Routines.
 
-    Works for either 2 vertices for an object in Edit mode
-    or 2 selected objects in Object mode.
+        Works for either 2 vertices for an object in Edit mode
+        or 2 selected objects in Object mode.
 
     Args:
         obj: The Object under consideration
@@ -576,7 +582,8 @@ SHADER = gpu.shader.from_builtin("3D_UNIFORM_COLOR") if not bpy.app.background e
 def draw_3d(coords, gtype, rgba, context):
     """Draw Pivot Point Graphics.
 
-    Draws either Lines Points, or Tris using defined shader
+    Note:
+        Draws either Lines Points, or Tris using defined shader
 
     Args:
         coords: Input Coordinates List
@@ -603,9 +610,10 @@ def draw_3d(coords, gtype, rgba, context):
 def draw_callback_3d(self, context):
     """Create Coordinate List for Pivot Point Graphic.
 
-    Creates coordinates for Pivot Point Graphic consisting of 6 Tris
-    and one Point colour coded Red; X axis, Green; Y axis, Blue; Z axis
-    and a yellow point based upon screen scale
+    Note:
+        Creates coordinates for Pivot Point Graphic consisting of 6 Tris
+        and one Point colour coded Red; X axis, Green; Y axis, Blue; Z axis
+        and a yellow point based upon screen scale
 
     Args:
         context: Blender bpy.context instance.
@@ -688,14 +696,13 @@ def draw_callback_3d(self, context):
 def scale_set(self, context):
     """Sets Scale by dividing Pivot Distance by System Distance.
 
-    Sets Pivot Point Scale Factors by Measurement
+    Note:
+        Sets Pivot Point Scale Factors by Measurement
+        Uses pg.pivotdis & pg.distance scene variables
 
     Args:
         context: Blender bpy.context instance.
 
-    Note:
-        Uses pg.pivotdis & pg.distance scene variables
-
     Returns:
         Status Set.
     """
diff --git a/precision_drawing_tools/pdt_library.py b/precision_drawing_tools/pdt_library.py
index d69d5adc583c18923f69b54677f10dbcac85a7b0..c2565470506cdbf894956eee42ac608d00528c79 100644
--- a/precision_drawing_tools/pdt_library.py
+++ b/precision_drawing_tools/pdt_library.py
@@ -68,14 +68,13 @@ class PDT_OT_Append(Operator):
     def execute(self, context):
         """Appends Objects from PDT Library file.
 
-        Appended Objects are placed at Cursor Location.
+        Note:
+            Appended Objects are placed at Cursor Location.
+            Uses pg.lib_objects, pg.lib_collections & pg.lib_materials
 
         Args:
             context: Blender bpy.context instance.
 
-        Note:
-            Uses pg.lib_objects, pg.lib_collections & pg.lib_materials
-
         Returns:
             Status Set.
         """
@@ -146,14 +145,13 @@ class PDT_OT_Link(Operator):
     def execute(self, context):
         """Links Objects from PDT Library file.
 
-        Linked Objects are placed at Cursor Location
+        Note:
+            Linked Objects are placed at Cursor Location
+            Uses pg.lib_objects, pg.lib_collections & pg.lib_materials
 
         Args:
             context: Blender bpy.context instance.
 
-        Note:
-            Uses pg.lib_objects, pg.lib_collections & pg.lib_materials
-
         Returns:
             Status Set.
         """
diff --git a/precision_drawing_tools/pdt_msg_strings.py b/precision_drawing_tools/pdt_msg_strings.py
index cf586d563e572f9de3afb8800c2b601236325662..0c58620047ff3b2f0790a59368f04b91a97c372a 100644
--- a/precision_drawing_tools/pdt_msg_strings.py
+++ b/precision_drawing_tools/pdt_msg_strings.py
@@ -26,20 +26,21 @@
 # If you edit this file do not change any of the PDT_ format, just the Text Value in "'s
 # Do not delete any of the PDT_ lines
 #
-# Menu Labels
-#
 """This file contains all the Message Strings.
 
-    These strings are called by various programmes in PDT,
-    they can be set to suit individual User requirements.
+    Note:
+        These strings are called by various programmes in PDT,
+        they can be set to suit individual User requirements.
 
-Args:
-    None
+    Args:
+        None
 
-Returns:
-    None
-"""
+    Returns:
+        None.
+    """
 
+# Menu Labels
+#
 PDT_LAB_ABS = "Absolute"  # "Global"
 PDT_LAB_DEL = "Delta"  # "Relative"
 PDT_LAB_DIR = "Direction"  # "Polar"
diff --git a/precision_drawing_tools/pdt_pivot_point.py b/precision_drawing_tools/pdt_pivot_point.py
index 75cb3c16218247d35bc547b6f20ec25dfa68cd64..3b978b2de9255724f99105007d070953e08116d4 100644
--- a/precision_drawing_tools/pdt_pivot_point.py
+++ b/precision_drawing_tools/pdt_pivot_point.py
@@ -50,7 +50,8 @@ class PDT_OT_ModalDrawOperator(bpy.types.Operator):
     def handle_add(self, context):
         """Draw Pivot Point Graphic if not displayed.
 
-        Draws 7 element Pivot Point Graphic
+        Note:
+            Draws 7 element Pivot Point Graphic
 
         Args:
             context: Blender bpy.context instance.
@@ -69,7 +70,8 @@ class PDT_OT_ModalDrawOperator(bpy.types.Operator):
     def handle_remove(self, context):
         """Remove Pivot Point Graphic if displayed.
 
-        Removes 7 element Pivot Point Graphic
+        Note:
+            Removes 7 element Pivot Point Graphic
 
         Args:
             context: Blender bpy.context instance.
@@ -86,7 +88,8 @@ class PDT_OT_ModalDrawOperator(bpy.types.Operator):
     def execute(self, context):
         """Pivot Point Show/Hide Button Function.
 
-        Operational execute function for Show/Hide Pivot Point function
+        Note:
+            Operational execute function for Show/Hide Pivot Point function
 
         Args:
             context: Blender bpy.context instance.
@@ -136,8 +139,9 @@ class PDT_OT_ViewPlaneRotate(Operator):
     def execute(self, context):
         """Rotate Selected Vertices about Pivot Point.
 
-        Rotates any selected vertices about the Pivot Point
-        in View Oriented coordinates, works in any view orientation.
+        Note:
+            Rotates any selected vertices about the Pivot Point
+            in View Oriented coordinates, works in any view orientation.
 
         Args:
             context: Blender bpy.context instance.
@@ -199,8 +203,9 @@ class PDT_OT_ViewPlaneScale(Operator):
     def execute(self, context):
         """Scales Selected Vertices about Pivot Point.
 
-        Scales any selected vertices about the Pivot Point
-        in View Oriented coordinates, works in any view orientation
+        Note:
+            Scales any selected vertices about the Pivot Point
+            in View Oriented coordinates, works in any view orientation
 
         Args:
             context: Blender bpy.context instance.
@@ -250,7 +255,8 @@ class PDT_OT_PivotToCursor(Operator):
     def execute(self, context):
         """Moves Pivot Point to Cursor Location.
 
-        Moves Pivot Point to Cursor Location in active scene
+        Note:
+            Moves Pivot Point to Cursor Location in active scene
 
         Args:
             context: Blender bpy.context instance.
@@ -277,7 +283,8 @@ class PDT_OT_CursorToPivot(Operator):
     def execute(self, context):
         """Moves Cursor to Pivot Point Location.
 
-        Moves Cursor to Pivot Point Location in active scene
+        Note:
+            Moves Cursor to Pivot Point Location in active scene
 
         Args:
             context: Blender bpy.context instance.
@@ -319,8 +326,9 @@ class PDT_OT_PivotSelected(Operator):
     def execute(self, context):
         """Moves Pivot Point centroid of Selected Geometry.
 
-        Moves Pivot Point centroid of Selected Geometry in active scene
-        using Snap_Cursor_To_Selected, then puts cursor back to original location.
+        Note:
+            Moves Pivot Point centroid of Selected Geometry in active scene
+            using Snap_Cursor_To_Selected, then puts cursor back to original location.
 
         Args:
             context: Blender bpy.context instance.
@@ -378,7 +386,8 @@ class PDT_OT_PivotOrigin(Operator):
     def execute(self, context):
         """Moves Pivot Point to Object Origin.
 
-        Moves Pivot Point to Object Origin in active scene
+        Note:
+            Moves Pivot Point to Object Origin in active scene
 
         Args:
             context: Blender bpy.context instance.
@@ -426,8 +435,9 @@ class PDT_OT_PivotWrite(Operator):
     def execute(self, context):
         """Writes Pivot Point Location to Object's Custom Properties.
 
-        Writes Pivot Point Location to Object's Custom Properties
-        as Vector to 'PDT_PP_LOC' - Requires Confirmation through dialogue
+        Note:
+            Writes Pivot Point Location to Object's Custom Properties
+            as Vector to 'PDT_PP_LOC' - Requires Confirmation through dialogue
 
         Args:
             context: Blender bpy.context instance.
@@ -482,8 +492,9 @@ class PDT_OT_PivotRead(Operator):
     def execute(self, context):
         """Reads Pivot Point Location from Object's Custom Properties.
 
-        Sets Pivot Point Location from Object's Custom Properties
-        using 'PDT_PP_LOC'
+        Note:
+            Sets Pivot Point Location from Object's Custom Properties
+            using 'PDT_PP_LOC'
 
         Args:
             context: Blender bpy.context instance.
diff --git a/precision_drawing_tools/pdt_view.py b/precision_drawing_tools/pdt_view.py
index b11a3f5502c8f9bde76c8ecf746c4ce71adae526..eaa2e72eba238a2ee59ba5e319ba15d1456087ac 100644
--- a/precision_drawing_tools/pdt_view.py
+++ b/precision_drawing_tools/pdt_view.py
@@ -42,15 +42,14 @@ class PDT_OT_ViewRot(Operator):
     def execute(self, context):
         """View Rotation by Absolute Values.
 
-        Rotations are converted to 3x3 Quaternion Rotation Matrix.
-        This is an Absolute Rotation, not an Incremental Orbit.
+        Note:
+            Rotations are converted to 3x3 Quaternion Rotation Matrix.
+            This is an Absolute Rotation, not an Incremental Orbit.
+            Uses pg.rotation_coords scene variable
 
         Args:
             context: Blender bpy.context instance.
 
-        Note:
-            Uses pg.rotation_coords scene variables
-
         Returns:
             Status Set.
         """
@@ -77,14 +76,13 @@ class PDT_OT_ViewRotL(Operator):
     def execute(self, context):
         """View Orbit Left by Delta Value.
 
-        Orbits view to the left about its vertical axis
+        Note:
+            Uses pg.vrotangle scene variable
+            Orbits view to the left about its vertical axis
 
         Args:
             context: Blender bpy.context instance.
 
-        Note:
-            Uses pg.vrotangle scene variable
-
         Returns:
             Status Set.
         """
@@ -106,14 +104,13 @@ class PDT_OT_ViewRotR(Operator):
     def execute(self, context):
         """View Orbit Right by Delta Value.
 
-        Orbits view to the right about its vertical axis
+        Note:
+            Uses pg.vrotangle scene variable
+            Orbits view to the right about its vertical axis
 
         Args:
             context: Blender bpy.context instance.
 
-        Note:
-            Uses pg.vrotangle scene variable
-
         Returns:
             Status Set.
         """
@@ -135,14 +132,13 @@ class PDT_OT_ViewRotU(Operator):
     def execute(self, context):
         """View Orbit Up by Delta Value.
 
-        Orbits view up about its horizontal axis
+        Note:
+            Uses pg.vrotangle scene variable
+            Orbits view up about its horizontal axis
 
         Args:
             context: Blender bpy.context instance.
 
-        Note:
-            Uses pg.vrotangle scene variable
-
         Returns:
             Status Set.
         """
@@ -164,14 +160,13 @@ class PDT_OT_ViewRotD(Operator):
     def execute(self, context):
         """View Orbit Down by Delta Value.
 
-        Orbits view down about its horizontal axis
+        Note:
+            Uses pg.vrotangle scene variable
+            Orbits view down about its horizontal axis
 
         Args:
             context: Blender bpy.context instance.
 
-        Note:
-            Uses pg.vrotangle scene variable
-
         Returns:
             Status Set.
         """
@@ -193,14 +188,13 @@ class PDT_OT_ViewRoll(Operator):
     def execute(self, context):
         """View Roll by Delta Value.
 
-        Rolls view about its normal axis
+        Note:
+            Uses pg.vrotangle scene variable
+            Rolls view about its normal axis
 
         Args:
             context: Blender bpy.context instance.
 
-        Note:
-            Uses pg.vrotangle scene variable
-
         Returns:
             Status Set.
         """
@@ -222,7 +216,8 @@ class PDT_OT_ViewIso(Operator):
     def execute(self, context):
         """Set Isometric View.
 
-        Set view orientation to Orthographic Isometric
+        Note:
+            Set view orientation to Orthographic Isometric
 
         Args:
             context: Blender bpy.context instance.
diff --git a/precision_drawing_tools/pdt_xall.py b/precision_drawing_tools/pdt_xall.py
index f14fc292ba152353364c87020bec61af6cc38b62..92e1eb44bea440cd6f27f1ddc4417e5f91aaab16 100644
--- a/precision_drawing_tools/pdt_xall.py
+++ b/precision_drawing_tools/pdt_xall.py
@@ -40,7 +40,8 @@ def order_points(edge, point_list):
     v1, v2 = edge
 
     def dist(coord):
-        """MEasure distance between two coordinates."""
+        """Measure distance between two coordinates."""
+
         return (v1 - coord).length
 
     point_list = sorted(point_list, key=dist)
@@ -203,7 +204,8 @@ def unselect_nonintersecting(bm, d_edges, edge_indices):
 def intersect_all(context):
     """Computes All intersections with Crossing Geometry.
 
-    Deletes original edges and replaces with new intersected edges
+    Note:
+        Deletes original edges and replaces with new intersected edges
 
     Args:
         context: Blender bpy.context instance.
@@ -251,7 +253,7 @@ class PDT_OT_IntersectAllEdges(bpy.types.Operator):
 
     @classmethod
     def poll(cls, context):
-        """Check to see object is in correct condidtion.
+        """Check to see object is in correct condition.
 
         Args:
             context: Blender bpy.context instance.
@@ -267,7 +269,8 @@ class PDT_OT_IntersectAllEdges(bpy.types.Operator):
     def execute(self, context):
         """Computes All intersections with Crossing Geometry.
 
-        Deletes original edges and replaces with new intersected edges
+        Note:
+            Deletes original edges and replaces with new intersected edges
 
         Args:
             context: Blender bpy.context instance.