Use <see langword="x"/> instead of <c>x</c>

* Use <see langword="null"/> instead of <c>null</c>
* Use <see langword="true"/> instead of <c>true</c>
* Use <see langword="false"/> instead of <c>false</c>

MailKit/AccessControl.cs

@@ -50,9 +50,9 @@ public class AccessControl
 		/// <param name="name">The identifier name.</param>
 		/// <param name="rights">The access rights.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <para><paramref name="name"/> is <c>null</c>.</para>
+		/// <para><paramref name="name"/> is <see langword="null" />.</para>
 		/// <para>-or-</para>
-		/// <para><paramref name="rights"/> is <c>null</c>.</para>
+		/// <para><paramref name="rights"/> is <see langword="null" />.</para>
 		/// </exception>
 		public AccessControl (string name, IEnumerable<AccessRight> rights)
 		{
@@ -73,9 +73,9 @@ public AccessControl (string name, IEnumerable<AccessRight> rights)
 		/// <param name="name">The identifier name.</param>
 		/// <param name="rights">The access rights.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <para><paramref name="name"/> is <c>null</c>.</para>
+		/// <para><paramref name="name"/> is <see langword="null" />.</para>
 		/// <para>-or-</para>
-		/// <para><paramref name="rights"/> is <c>null</c>.</para>
+		/// <para><paramref name="rights"/> is <see langword="null" />.</para>
 		/// </exception>
 		public AccessControl (string name, string rights)
 		{
@@ -95,7 +95,7 @@ public AccessControl (string name, string rights)
 		/// </remarks>
 		/// <param name="name">The identifier name.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="name"/> is <c>null</c>.
+		/// <paramref name="name"/> is <see langword="null" />.
 		/// </exception>
 		public AccessControl (string name)
 		{

MailKit/AccessControlList.cs

@@ -47,7 +47,7 @@ public class AccessControlList : List<AccessControl>
 		/// </remarks>
 		/// <param name="controls">The list of access controls.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="controls"/> is <c>null</c>.
+		/// <paramref name="controls"/> is <see langword="null" />.
 		/// </exception>
 		public AccessControlList (IEnumerable<AccessControl> controls) : base (controls)
 		{

MailKit/AccessRight.cs

@@ -154,8 +154,8 @@ public AccessRight (char right)
 		/// Determines whether the specified <see cref="MailKit.AccessRight"/> is equal to the current <see cref="MailKit.AccessRight"/>.
 		/// </remarks>
 		/// <param name="other">The <see cref="MailKit.AccessRight"/> to compare with the current <see cref="MailKit.AccessRight"/>.</param>
-		/// <returns><c>true</c> if the specified <see cref="MailKit.AccessRight"/> is equal to the current
-		/// <see cref="MailKit.AccessRight"/>; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if the specified <see cref="MailKit.AccessRight"/> is equal to the current
+		/// <see cref="MailKit.AccessRight"/>; otherwise, <see langword="false" />.</returns>
 		public bool Equals (AccessRight other)
 		{
 			return other.Right == Right;
@@ -169,7 +169,7 @@ public bool Equals (AccessRight other)
 		/// <remarks>
 		/// Determines whether two access rights are equal.
 		/// </remarks>
-		/// <returns><c>true</c> if <paramref name="right1"/> and <paramref name="right2"/> are equal; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if <paramref name="right1"/> and <paramref name="right2"/> are equal; otherwise, <see langword="false" />.</returns>
 		/// <param name="right1">The first access right to compare.</param>
 		/// <param name="right2">The second access right to compare.</param>
 		public static bool operator == (AccessRight right1, AccessRight right2)
@@ -183,7 +183,7 @@ public bool Equals (AccessRight other)
 		/// <remarks>
 		/// Determines whether two access rights are not equal.
 		/// </remarks>
-		/// <returns><c>true</c> if <paramref name="right1"/> and <paramref name="right2"/> are not equal; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if <paramref name="right1"/> and <paramref name="right2"/> are not equal; otherwise, <see langword="false" />.</returns>
 		/// <param name="right1">The first access right to compare.</param>
 		/// <param name="right2">The second access right to compare.</param>
 		public static bool operator != (AccessRight right1, AccessRight right2)
@@ -198,8 +198,8 @@ public bool Equals (AccessRight other)
 		/// Determines whether the specified <see cref="System.Object"/> is equal to the current <see cref="MailKit.AccessRight"/>.
 		/// </remarks>
 		/// <param name="obj">The <see cref="System.Object"/> to compare with the current <see cref="MailKit.AccessRight"/>.</param>
-		/// <returns><c>true</c> if the specified <see cref="System.Object"/> is equal to the current <see cref="MailKit.AccessRight"/>;
-		/// otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if the specified <see cref="System.Object"/> is equal to the current <see cref="MailKit.AccessRight"/>;
+		/// otherwise, <see langword="false" />.</returns>
 		public override bool Equals (object obj)
 		{
 			return obj is AccessRight right && right.Right == Right;

MailKit/AccessRights.cs

@@ -47,7 +47,7 @@ public class AccessRights : ICollection<AccessRight>
 		/// </remarks>
 		/// <param name="rights">The access rights.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="rights"/> is <c>null</c>.
+		/// <paramref name="rights"/> is <see langword="null" />.
 		/// </exception>
 		public AccessRights (IEnumerable<AccessRight> rights)
 		{
@@ -62,7 +62,7 @@ public AccessRights (IEnumerable<AccessRight> rights)
 		/// </remarks>
 		/// <param name="rights">The access rights.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="rights"/> is <c>null</c>.
+		/// <paramref name="rights"/> is <see langword="null" />.
 		/// </exception>
 		public AccessRights (string rights)
 		{
@@ -96,7 +96,7 @@ public int Count {
 		/// <remarks>
 		/// Gets whether or not this set of access rights is read only.
 		/// </remarks>
-		/// <value><c>true</c> if this collection is read only; otherwise, <c>false</c>.</value>
+		/// <value><see langword="true" /> if this collection is read only; otherwise, <see langword="false" />.</value>
 		public bool IsReadOnly {
 			get { return false; }
 		}
@@ -119,7 +119,7 @@ void ICollection<AccessRight>.Add (AccessRight right)
 		/// <remarks>
 		/// Adds the specified access right if it is not already included.
 		/// </remarks>
-		/// <returns><c>true</c> if the right was added; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if the right was added; otherwise, <see langword="false" />.</returns>
 		/// <param name="right">The access right.</param>
 		public bool Add (AccessRight right)
 		{
@@ -137,7 +137,7 @@ public bool Add (AccessRight right)
 		/// <remarks>
 		/// Adds the right specified by the given character.
 		/// </remarks>
-		/// <returns><c>true</c> if the right was added; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if the right was added; otherwise, <see langword="false" />.</returns>
 		/// <param name="right">The right.</param>
 		public bool Add (char right)
 		{
@@ -152,7 +152,7 @@ public bool Add (char right)
 		/// </remarks>
 		/// <param name="rights">The rights.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="rights"/> is <c>null</c>.
+		/// <paramref name="rights"/> is <see langword="null" />.
 		/// </exception>
 		public void AddRange (string rights)
 		{
@@ -171,7 +171,7 @@ public void AddRange (string rights)
 		/// </remarks>
 		/// <param name="rights">The rights.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="rights"/> is <c>null</c>.
+		/// <paramref name="rights"/> is <see langword="null" />.
 		/// </exception>
 		public void AddRange (IEnumerable<AccessRight> rights)
 		{
@@ -199,7 +199,7 @@ public void Clear ()
 		/// <remarks>
 		/// Determines whether or not the set of access rights already contains the specified right
 		/// </remarks>
-		/// <returns><value>true</value> if the specified right exists; otherwise <value>false</value>.</returns>
+		/// <returns><see langword="true" /> if the specified right exists; otherwise, <see langword="false" />.</returns>
 		/// <param name="right">The access right.</param>
 		public bool Contains (AccessRight right)
 		{
@@ -216,7 +216,7 @@ public bool Contains (AccessRight right)
 		/// <param name="array">The array.</param>
 		/// <param name="arrayIndex">The array index.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="array"/> is <c>null</c>.
+		/// <paramref name="array"/> is <see langword="null" />.
 		/// </exception>
 		/// <exception cref="System.ArgumentOutOfRangeException">
 		/// <paramref name="arrayIndex"/> is out of range.
@@ -238,7 +238,7 @@ public void CopyTo (AccessRight[] array, int arrayIndex)
 		/// <remarks>
 		/// Removes the specified access right.
 		/// </remarks>
-		/// <returns><value>true</value> if the access right was removed; otherwise <value>false</value>.</returns>
+		/// <returns><see langword="true" /> if the access right was removed; otherwise, <see langword="false" />.</returns>
 		/// <param name="right">The access right.</param>
 		public bool Remove (AccessRight right)
 		{

MailKit/AlertEventArgs.cs

@@ -45,7 +45,7 @@ public class AlertEventArgs : EventArgs
 		/// </remarks>
 		/// <param name="message">The alert message.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="message"/> is <c>null</c>.
+		/// <paramref name="message"/> is <see langword="null" />.
 		/// </exception>
 		public AlertEventArgs (string message)
 		{

MailKit/Annotation.cs

@@ -46,7 +46,7 @@ public class Annotation
 		/// </remarks>
 		/// <param name="entry">The annotation entry.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="entry"/> is <c>null</c>.
+		/// <paramref name="entry"/> is <see langword="null" />.
 		/// </exception>
 		public Annotation (AnnotationEntry entry)
 		{

MailKit/AnnotationAttribute.cs

@@ -106,7 +106,7 @@ public class AnnotationAttribute : IEquatable<AnnotationAttribute>
 		/// </remarks>
 		/// <param name="specifier">The annotation attribute specifier.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="specifier"/> is <c>null</c>.
+		/// <paramref name="specifier"/> is <see langword="null" />.
 		/// </exception>
 		/// <exception cref="System.ArgumentException">
 		/// <paramref name="specifier"/> contains illegal characters.
@@ -179,8 +179,8 @@ public string Specifier {
 		/// Determines whether the specified <see cref="MailKit.AnnotationAttribute"/> is equal to the current <see cref="MailKit.AnnotationAttribute"/>.
 		/// </remarks>
 		/// <param name="other">The <see cref="MailKit.AnnotationAttribute"/> to compare with the current <see cref="MailKit.AnnotationAttribute"/>.</param>
-		/// <returns><c>true</c> if the specified <see cref="MailKit.AnnotationAttribute"/> is equal to the current
-		/// <see cref="MailKit.AnnotationAttribute"/>; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if the specified <see cref="MailKit.AnnotationAttribute"/> is equal to the current
+		/// <see cref="MailKit.AnnotationAttribute"/>; otherwise, <see langword="false" />.</returns>
 		public bool Equals (AnnotationAttribute other)
 		{
 			return other?.Specifier == Specifier;
@@ -194,7 +194,7 @@ public bool Equals (AnnotationAttribute other)
 		/// <remarks>
 		/// Determines whether two annotation attributes are equal.
 		/// </remarks>
-		/// <returns><c>true</c> if <paramref name="attr1"/> and <paramref name="attr2"/> are equal; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if <paramref name="attr1"/> and <paramref name="attr2"/> are equal; otherwise, <see langword="false" />.</returns>
 		/// <param name="attr1">The first annotation attribute to compare.</param>
 		/// <param name="attr2">The second annotation attribute to compare.</param>
 		public static bool operator == (AnnotationAttribute attr1, AnnotationAttribute attr2)
@@ -208,7 +208,7 @@ public bool Equals (AnnotationAttribute other)
 		/// <remarks>
 		/// Determines whether two annotation attributes are not equal.
 		/// </remarks>
-		/// <returns><c>true</c> if <paramref name="attr1"/> and <paramref name="attr2"/> are not equal; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if <paramref name="attr1"/> and <paramref name="attr2"/> are not equal; otherwise, <see langword="false" />.</returns>
 		/// <param name="attr1">The first annotation attribute to compare.</param>
 		/// <param name="attr2">The second annotation attribute to compare.</param>
 		public static bool operator != (AnnotationAttribute attr1, AnnotationAttribute attr2)
@@ -223,8 +223,8 @@ public bool Equals (AnnotationAttribute other)
 		/// Determines whether the specified <see cref="System.Object"/> is equal to the current <see cref="MailKit.AnnotationAttribute"/>.
 		/// </remarks>
 		/// <param name="obj">The <see cref="System.Object"/> to compare with the current <see cref="MailKit.AnnotationAttribute"/>.</param>
-		/// <returns><c>true</c> if the specified <see cref="System.Object"/> is equal to the current
-		/// <see cref="MailKit.AnnotationAttribute"/>; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if the specified <see cref="System.Object"/> is equal to the current
+		/// <see cref="MailKit.AnnotationAttribute"/>; otherwise, <see langword="false" />.</returns>
 		public override bool Equals (object obj)
 		{
 			return obj is AnnotationAttribute attribute && attribute.Specifier == Specifier;

MailKit/AnnotationEntry.cs

@@ -185,7 +185,7 @@ static void ValidatePartSpecifier (string partSpecifier)
 		/// <param name="path">The annotation entry path.</param>
 		/// <param name="scope">The scope of the annotation.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="path"/> is <c>null</c>.
+		/// <paramref name="path"/> is <see langword="null" />.
 		/// </exception>
 		/// <exception cref="System.ArgumentException">
 		/// <paramref name="path"/> is invalid.
@@ -214,9 +214,9 @@ public AnnotationEntry (string path, AnnotationScope scope = AnnotationScope.Bot
 		/// <param name="path">The annotation entry path.</param>
 		/// <param name="scope">The scope of the annotation.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <para><paramref name="partSpecifier"/> is <c>null</c>.</para>
+		/// <para><paramref name="partSpecifier"/> is <see langword="null" />.</para>
 		/// <para>-or-</para>
-		/// <para><paramref name="path"/> is <c>null</c>.</para>
+		/// <para><paramref name="path"/> is <see langword="null" />.</para>
 		/// </exception>
 		/// <exception cref="System.ArgumentException">
 		/// <para><paramref name="partSpecifier"/> is invalid.</para>
@@ -248,9 +248,9 @@ public AnnotationEntry (string partSpecifier, string path, AnnotationScope scope
 		/// <param name="path">The annotation entry path.</param>
 		/// <param name="scope">The scope of the annotation.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <para><paramref name="part"/> is <c>null</c>.</para>
+		/// <para><paramref name="part"/> is <see langword="null" />.</para>
 		/// <para>-or-</para>
-		/// <para><paramref name="path"/> is <c>null</c>.</para>
+		/// <para><paramref name="path"/> is <see langword="null" />.</para>
 		/// </exception>
 		/// <exception cref="System.ArgumentException">
 		/// <paramref name="path"/> is invalid.
@@ -325,8 +325,8 @@ public AnnotationScope Scope {
 		/// Determines whether the specified <see cref="MailKit.AnnotationEntry"/> is equal to the current <see cref="MailKit.AnnotationEntry"/>.
 		/// </remarks>
 		/// <param name="other">The <see cref="MailKit.AnnotationEntry"/> to compare with the current <see cref="MailKit.AnnotationEntry"/>.</param>
-		/// <returns><c>true</c> if the specified <see cref="MailKit.AnnotationEntry"/> is equal to the current
-		/// <see cref="MailKit.AnnotationEntry"/>; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if the specified <see cref="MailKit.AnnotationEntry"/> is equal to the current
+		/// <see cref="MailKit.AnnotationEntry"/>; otherwise, <see langword="false" />.</returns>
 		public bool Equals (AnnotationEntry other)
 		{
 			return other?.Entry == Entry;
@@ -340,7 +340,7 @@ public bool Equals (AnnotationEntry other)
 		/// <remarks>
 		/// Determines whether two annotation entries are equal.
 		/// </remarks>
-		/// <returns><c>true</c> if <paramref name="entry1"/> and <paramref name="entry2"/> are equal; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if <paramref name="entry1"/> and <paramref name="entry2"/> are equal; otherwise, <see langword="false" />.</returns>
 		/// <param name="entry1">The first annotation entry to compare.</param>
 		/// <param name="entry2">The second annotation entry to compare.</param>
 		public static bool operator == (AnnotationEntry entry1, AnnotationEntry entry2)
@@ -354,7 +354,7 @@ public bool Equals (AnnotationEntry other)
 		/// <remarks>
 		/// Determines whether two annotation entries are not equal.
 		/// </remarks>
-		/// <returns><c>true</c> if <paramref name="entry1"/> and <paramref name="entry2"/> are not equal; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if <paramref name="entry1"/> and <paramref name="entry2"/> are not equal; otherwise, <see langword="false" />.</returns>
 		/// <param name="entry1">The first annotation entry to compare.</param>
 		/// <param name="entry2">The second annotation entry to compare.</param>
 		public static bool operator != (AnnotationEntry entry1, AnnotationEntry entry2)
@@ -369,8 +369,8 @@ public bool Equals (AnnotationEntry other)
 		/// Determines whether the specified <see cref="System.Object"/> is equal to the current <see cref="MailKit.AnnotationEntry"/>.
 		/// </remarks>
 		/// <param name="obj">The <see cref="System.Object"/> to compare with the current <see cref="MailKit.AnnotationEntry"/>.</param>
-		/// <returns><c>true</c> if the specified <see cref="System.Object"/> is equal to the current
-		/// <see cref="MailKit.AnnotationEntry"/>; otherwise, <c>false</c>.</returns>
+		/// <returns><see langword="true" /> if the specified <see cref="System.Object"/> is equal to the current
+		/// <see cref="MailKit.AnnotationEntry"/>; otherwise, <see langword="false" />.</returns>
 		public override bool Equals (object obj)
 		{
 			return obj is AnnotationEntry entry && entry.Entry == Entry;
@@ -409,7 +409,7 @@ public override string ToString ()
 		/// <param name="entry">The annotation entry.</param>
 		/// <returns>The parsed annotation entry.</returns>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="entry"/> is <c>null</c>.
+		/// <paramref name="entry"/> is <see langword="null" />.
 		/// </exception>
 		/// <exception cref="System.FormatException">
 		/// <paramref name="entry"/> does not conform to the annotation entry syntax.

MailKit/AnnotationsChangedEventArgs.cs

@@ -58,7 +58,7 @@ internal AnnotationsChangedEventArgs (int index) : base (index)
 		/// <param name="index">The message index.</param>
 		/// <param name="annotations">The annotations that changed.</param>
 		/// <exception cref="System.ArgumentNullException">
-		/// <paramref name="annotations"/> is <c>null</c>.
+		/// <paramref name="annotations"/> is <see langword="null" />.
 		/// </exception>
 		public AnnotationsChangedEventArgs (int index, IEnumerable<Annotation> annotations) : base (index)
 		{