diff --git a/src/OpenFOAM/containers/Bits/PackedList/PackedList.H b/src/OpenFOAM/containers/Bits/PackedList/PackedList.H
index 47525c617e..f4d01f94dd 100644
--- a/src/OpenFOAM/containers/Bits/PackedList/PackedList.H
+++ b/src/OpenFOAM/containers/Bits/PackedList/PackedList.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2017-2019 OpenCFD Ltd.
+    Copyright (C) 2017-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -105,7 +105,7 @@ SourceFiles
 namespace Foam
 {
 
-// Forward declarations
+// Forward Declarations
 template<unsigned Width> class PackedList;
 class labelRange;
 
@@ -230,7 +230,7 @@ public:
 
     // Constructors
 
-        //- Null constructor
+        //- Default construct, zero-sized and no allocation
         inline constexpr PackedList() noexcept;
 
         //- Construct for given number of elements, initializes values to 0
@@ -451,6 +451,7 @@ public:
         class reference
         {
         protected:
+
             friend class PackedList;    // Access for parent
             void operator&() = delete;  // Refuse to provide its address
 
@@ -472,10 +473,16 @@ public:
 
         public:
 
+            //- Copy construct
+            reference(const reference&) = default;
+
+            //- Move construct
+            reference(reference&&) = default;
+
             //- Value assignment
             inline void operator=(const reference& other);
 
-            //- Value assignment.
+            //- Value assignment
             inline void operator=(const unsigned int val);
 
             //- Conversion operator.
diff --git a/src/OpenFOAM/containers/Bits/bitSet/bitSet.H b/src/OpenFOAM/containers/Bits/bitSet/bitSet.H
index a617a9434d..076e4e97a6 100644
--- a/src/OpenFOAM/containers/Bits/bitSet/bitSet.H
+++ b/src/OpenFOAM/containers/Bits/bitSet/bitSet.H
@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2018-2019 OpenCFD Ltd.
+    Copyright (C) 2018-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -54,7 +54,7 @@ See also
 namespace Foam
 {
 
-// Forward declarations
+// Forward Declarations
 class bitSet;
 class labelRange;
 
@@ -131,13 +131,14 @@ public:
         class const_iterator;
         typedef unsigned int const_reference;
 
-    //- Define class name and debug
+
+    //- Declare type-name (with debug switch)
     ClassName("bitSet");
 
 
     // Constructors
 
-        //- Construct an empty, zero-sized set
+        //- Default construct an empty, zero-sized set
         inline bitSet() noexcept;
 
         //- Construct from Istream
@@ -438,6 +439,7 @@ public:
             public PackedList<1>::reference
         {
         protected:
+
             friend class bitSet;        // Access for parent
             void operator&() = delete;  // Refuse to provide its address
 
@@ -447,6 +449,12 @@ public:
 
         public:
 
+            //- Copy construct
+            reference(const reference&) = default;
+
+            //- Move construct
+            reference(reference&&) = default;
+
             //- Flip the bit at the position, no range-checking
             inline void flip();
 
@@ -474,7 +482,7 @@ public:
             //- Global position of the current \a on bit
             label pos_;
 
-            //- Construct null - an end iterator
+            //- Default construct - an end iterator
             inline const_iterator() noexcept;
 
             //- Construct begin iterator
diff --git a/src/OpenFOAM/containers/HashTables/HashTable/HashTable.H b/src/OpenFOAM/containers/HashTables/HashTable/HashTable.H
index 9fc07ea5e8..3f15e87c25 100644
--- a/src/OpenFOAM/containers/HashTables/HashTable/HashTable.H
+++ b/src/OpenFOAM/containers/HashTables/HashTable/HashTable.H
@@ -206,7 +206,7 @@ public:
 
     // Constructors
 
-        //- Construct null with default (128) table capacity
+        //- Default construct with default (128) table capacity
         HashTable();
 
         //- Construct given initial table capacity
@@ -550,6 +550,7 @@ protected:
         class Iterator
         {
         public:
+
         // Typedefs
             using iterator_category = std::forward_iterator_tag;
             using difference_type = this_type::difference_type;
@@ -671,6 +672,7 @@ public:
             public Iterator<false>
         {
         public:
+
         // Typedefs
             using iterator_category = std::forward_iterator_tag;
             using difference_type   = this_type::difference_type;
@@ -684,8 +686,8 @@ public:
 
         // Constructors
 
-            //- Construct null (end iterator)
-            inline iterator() = default;
+            //- Default construct (end iterator)
+            iterator() = default;
 
             //- Copy construct from similar access type
             inline explicit iterator(const Iterator<false>& iter)
@@ -729,6 +731,7 @@ public:
             public Iterator<true>
         {
         public:
+
         // Typedefs
             using iterator_category = std::forward_iterator_tag;
             using difference_type   = this_type::difference_type;
@@ -741,8 +744,11 @@ public:
 
         // Constructors
 
-            //- Construct null (end iterator)
-            inline const_iterator() = default;
+            //- Default construct (end iterator)
+            const_iterator() = default;
+
+            //- Copy construct
+            const_iterator(const const_iterator&) = default;
 
             //- Copy construct from similar access type
             inline explicit const_iterator(const Iterator<true>& iter)
@@ -781,8 +787,10 @@ public:
             inline const_iterator& operator++();
             inline const_iterator operator++(int);
 
+
         // Assignment
 
+            //- Copy assignment
             const_iterator& operator=(const const_iterator&) = default;
 
             // Allow assign from iterator to const_iterator
@@ -805,6 +813,7 @@ public:
             public Iter
         {
         public:
+
             using value_type = this_type::key_type;
             using reference  = const Key&;
 
diff --git a/src/OpenFOAM/containers/LinkedLists/linkTypes/DLListBase/DLListBase.H b/src/OpenFOAM/containers/LinkedLists/linkTypes/DLListBase/DLListBase.H
index 3c8bff4203..54f6a6276c 100644
--- a/src/OpenFOAM/containers/LinkedLists/linkTypes/DLListBase/DLListBase.H
+++ b/src/OpenFOAM/containers/LinkedLists/linkTypes/DLListBase/DLListBase.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2017-2019 OpenCFD Ltd.
+    Copyright (C) 2017-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -72,7 +72,7 @@ public:
         //- Pointer to next entry in list
         link* next_ = nullptr;
 
-        //- Null construct
+        //- Default construct
         link() = default;
 
         //- Check if the node is registered with the list
@@ -85,7 +85,7 @@ public:
 
 private:
 
-    // Private Member Data
+    // Private Data
 
        //- Pointer to first element
        link *first_ = nullptr;
@@ -97,15 +97,6 @@ private:
        label size_ = 0;
 
 
-    // Private Member Functions
-
-        //- No copy construct
-        DLListBase(const DLListBase&) = delete;
-
-        //- No copy assignment
-        void operator=(const DLListBase&) = delete;
-
-
 protected:
 
     // Protected Member Functions
@@ -142,14 +133,19 @@ public:
         friend class const_iterator;
 
 
-    // Constructors
+    // Generated Methods
 
-        //- Null construct
+        //- Default construct
         DLListBase() = default;
 
+        //- No copy construct
+        DLListBase(const DLListBase&) = delete;
 
-    //- Destructor
-    ~DLListBase() = default;
+        //- No copy assignment
+        void operator=(const DLListBase&) = delete;
+
+        //- Destructor
+        ~DLListBase() = default;
 
 
     // Member Functions
@@ -233,6 +229,9 @@ public:
 
         public:
 
+            //- Copy construct
+            iterator(const iterator&) = default;
+
             //- Construct for a node on a list
             inline iterator(DLListBase* list, link* item);
 
@@ -280,15 +279,15 @@ public:
 
         public:
 
+            //- Copy construct
+            const_iterator(const const_iterator&) = default;
+
             //- Construct for a node on a list
             inline const_iterator(const DLListBase* list, const link* item);
 
             //- Copy construct from a non-const iterator
             inline const_iterator(const DLListBase::iterator& iter);
 
-            //- Copy construct
-            const_iterator(const const_iterator&) = default;
-
             //- The storage node
             inline const link* get_node() const;
 
@@ -308,6 +307,7 @@ public:
             //- Move forward through list
             inline void next();
 
+            //- Copy assignment
             const_iterator& operator=(const const_iterator&) = default;
 
             inline bool operator==(const const_iterator&) const;
diff --git a/src/OpenFOAM/containers/LinkedLists/linkTypes/SLListBase/SLListBase.H b/src/OpenFOAM/containers/LinkedLists/linkTypes/SLListBase/SLListBase.H
index ccc7c9ab97..53e2b16da6 100644
--- a/src/OpenFOAM/containers/LinkedLists/linkTypes/SLListBase/SLListBase.H
+++ b/src/OpenFOAM/containers/LinkedLists/linkTypes/SLListBase/SLListBase.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2017-2019 OpenCFD Ltd.
+    Copyright (C) 2017-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -69,14 +69,14 @@ public:
         //- Pointer to next entry in list
         link* next_ = nullptr;
 
-        //- Null construct
+        //- Default construct
         link() = default;
     };
 
 
 private:
 
-    // Private Member Data
+    // Private Data
 
        //- A pointer to the last element.
        //  last_->next_ points to first element, i.e. circular storage
@@ -86,15 +86,6 @@ private:
        label size_ = 0;
 
 
-    // Private Member Functions
-
-        //- No copy construct
-        SLListBase(const SLListBase&) = delete;
-
-        //- No copy assignment
-        void operator=(const SLListBase&) = delete;
-
-
 protected:
 
     // Protected Member Functions
@@ -130,14 +121,19 @@ public:
         friend class const_iterator;
 
 
-    // Constructors
+    // Generated Methods
 
-        //- Null construct
+        //- Default construct
         SLListBase() = default;
 
+        //- No copy construct
+        SLListBase(const SLListBase&) = delete;
 
-    //- Destructor
-    ~SLListBase() = default;
+        //- No copy assignment
+        void operator=(const SLListBase&) = delete;
+
+        //- Destructor
+        ~SLListBase() = default;
 
 
     // Member Functions
@@ -209,6 +205,9 @@ public:
 
         public:
 
+            //- Copy construct
+            iterator(const iterator&) = default;
+
             //- Construct for a node on the list
             inline iterator(SLListBase* list, link* item);
 
@@ -231,6 +230,7 @@ public:
             //- Move forward through list
             inline void next();
 
+            //- Copy assignment
             inline void operator=(const iterator& iter);
 
             inline bool operator==(const iterator& iter) const;
@@ -254,15 +254,15 @@ public:
 
         public:
 
+            //- Copy construct
+            const_iterator(const const_iterator&) = default;
+
             //- Construct for a node on the list
             inline const_iterator(const SLListBase* list, const link* item);
 
             //- Construct from a non-const iterator
             inline const_iterator(const SLListBase::iterator& iter);
 
-            //- Copy construct
-            const_iterator(const const_iterator&) = default;
-
             //- The storage node
             inline const link* get_node() const;
 
@@ -282,6 +282,7 @@ public:
             //- Move forward through list
             inline void next();
 
+            //- Copy assignment
             const_iterator& operator=(const const_iterator&) = default;
 
             inline bool operator==(const const_iterator& iter) const;
@@ -306,7 +307,6 @@ public:
 
         //- No reverse iteration
         const const_iterator& crend() const = delete;
-
 };
 
 
diff --git a/src/OpenFOAM/containers/Lists/FixedList/FixedList.H b/src/OpenFOAM/containers/Lists/FixedList/FixedList.H
index 2f5e0b1e95..5c7ef7f958 100644
--- a/src/OpenFOAM/containers/Lists/FixedList/FixedList.H
+++ b/src/OpenFOAM/containers/Lists/FixedList/FixedList.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2017-2019 OpenCFD Ltd.
+    Copyright (C) 2017-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -135,7 +135,7 @@ public:
         typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
 
 
-    // Static Member Functions
+    // Static Functions
 
         //- Return a null FixedList
         inline static const FixedList<T, N>& null();
@@ -143,8 +143,8 @@ public:
 
     // Constructors
 
-        //- Null constructor
-        inline FixedList() = default;
+        //- Default construct
+        FixedList() = default;
 
         //- Construct and initialize all entries to given value
         inline explicit FixedList(const T& val);
@@ -155,7 +155,7 @@ public:
         //- Copy construct from C-array
         inline explicit FixedList(const T list[N]);
 
-        //- Copy constructor
+        //- Copy construct
         inline FixedList(const FixedList<T, N>& list);
 
         //- Move construct by using move assignment for the individual
diff --git a/src/OpenFOAM/containers/Lists/SubList/SubList.H b/src/OpenFOAM/containers/Lists/SubList/SubList.H
index 4d9773d706..02ab2d896e 100644
--- a/src/OpenFOAM/containers/Lists/SubList/SubList.H
+++ b/src/OpenFOAM/containers/Lists/SubList/SubList.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2017-2019 OpenCFD Ltd.
+    Copyright (C) 2017-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -50,7 +50,7 @@ SourceFiles
 namespace Foam
 {
 
-// Forward declarations
+// Forward Declarations
 template<class T> class SubList;
 
 // Common list types
@@ -70,12 +70,18 @@ class SubList
 {
 public:
 
-    // Static Member Functions
+    // Static Functions
 
         //- Return a null SubList
         inline static const SubList<T>& null();
 
 
+    // Generated Methods
+
+        //- Copy construct
+        SubList(const SubList&) = default;
+
+
     // Constructors
 
         //- Construct from UList, the entire size
@@ -122,7 +128,7 @@ public:
         //- Copy assign entries from given sub-list
         inline void operator=(const SubList<T>& list);
 
-        //- Copy assign entries to the given list
+        //- Copy assign entries from given list
         inline void operator=(const UList<T>& list);
 
         //- Assign all entries to the given value
diff --git a/src/OpenFOAM/containers/Lists/UList/UList.H b/src/OpenFOAM/containers/Lists/UList/UList.H
index 3ce31eb20b..c8c131ba85 100644
--- a/src/OpenFOAM/containers/Lists/UList/UList.H
+++ b/src/OpenFOAM/containers/Lists/UList/UList.H
@@ -66,7 +66,7 @@ SourceFiles
 namespace Foam
 {
 
-// Forward declarations
+// Forward Declarations
 class labelRange;
 template<class T> class List;
 template<class T> class SubList;
@@ -87,7 +87,7 @@ typedef UList<label> labelUList;    //!< A UList of labels
 template<class T>
 class UList
 {
-    // Private data
+    // Private Data
 
         //- Number of elements in UList
         label size_;
@@ -167,13 +167,13 @@ public:
         friend class SubList<T>;
 
 
-    // Static Member Functions
+    // Static Functions
 
         //- Return a UList reference to a nullObject
         inline static const UList<T>& null();
 
 
-    // Public classes
+    // Public Classes
 
         //- A list compare binary predicate for normal sort
         struct less
@@ -208,9 +208,15 @@ public:
         };
 
 
+    // Generated Methods
+
+        //- Copy construct
+        UList(const UList<T>&) = default;
+
+
     // Constructors
 
-        //- Null constructor
+        //- Default construct, zero-sized and nullptr
         inline constexpr UList() noexcept;
 
         //- Construct from components
@@ -331,7 +337,7 @@ public:
         void deepCopy(const UList<T>& list);
 
 
-    // Member operators
+    // Member Operators
 
         //- Return element of UList
         inline T& operator[](const label i);
diff --git a/src/OpenFOAM/primitives/Tuple2/Tuple2.H b/src/OpenFOAM/primitives/Tuple2/Tuple2.H
index 3587593808..dd2b6116f9 100644
--- a/src/OpenFOAM/primitives/Tuple2/Tuple2.H
+++ b/src/OpenFOAM/primitives/Tuple2/Tuple2.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -75,8 +75,8 @@ public:
 
     // Constructors
 
-        //- Construct null
-        inline Tuple2() = default;
+        //- Default construct
+        Tuple2() = default;
 
         //- Copy construct from components
         inline Tuple2(const T1& f, const T2& s)
diff --git a/src/OpenFOAM/primitives/strings/lists/hashedWordList.H b/src/OpenFOAM/primitives/strings/lists/hashedWordList.H
index 2bd429d59c..7104aac432 100644
--- a/src/OpenFOAM/primitives/strings/lists/hashedWordList.H
+++ b/src/OpenFOAM/primitives/strings/lists/hashedWordList.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2016-2019 OpenCFD Ltd.
+    Copyright (C) 2016-2020 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -65,8 +65,8 @@ public:
 
     // Constructors
 
-        //- Construct an empty list
-        inline hashedWordList() = default;
+        //- Default construct an empty list
+        hashedWordList() = default;
 
         //- Copy construct.
         inline hashedWordList(const hashedWordList& list);