quite a bit, too much to summarize here

packages/Microsoft.Bcl.1.1.10/lib/sl4/System.IO.xml

@@ -0,0 +1,51 @@
+<?xml version="1.0"?>
+<doc>
+    <assembly>
+        <name>System.IO</name>
+    </assembly>
+    <members>
+        <member name="T:System.Strings">
+            <summary>
+              A strongly-typed resource class, for looking up localized strings, etc.
+            </summary>
+        </member>
+        <member name="P:System.Strings.ResourceManager">
+            <summary>
+              Returns the cached ResourceManager instance used by this class.
+            </summary>
+        </member>
+        <member name="P:System.Strings.Culture">
+            <summary>
+              Overrides the current thread's CurrentUICulture property for all
+              resource lookups using this strongly typed resource class.
+            </summary>
+        </member>
+        <member name="P:System.Strings.GenericInvalidData">
+            <summary>
+              Looks up a localized string similar to Found invalid data while decoding..
+            </summary>
+        </member>
+        <member name="T:System.IO.InvalidDataException">
+            <summary>
+            The exception that is thrown when a data stream is in an invalid format.
+            </summary>
+        </member>
+        <member name="M:System.IO.InvalidDataException.#ctor">
+            <summary>
+            Initializes a new instance of the <see cref="T:System.IO.InvalidDataException" /> class.
+            </summary>
+        </member>
+        <member name="M:System.IO.InvalidDataException.#ctor(System.String)">
+            <summary>
+            Initializes a new instance of the <see cref="T:System.IO.InvalidDataException" /> class with a specified error message.
+            </summary>
+            <param name="message">The error message that explains the reason for the exception.</param>
+        </member>
+        <member name="M:System.IO.InvalidDataException.#ctor(System.String,System.Exception)">
+            <summary>
+            Initializes a new instance of the <see cref="T:System.IO.InvalidDataException" /> class with a reference to the inner exception that is the cause of this exception.</summary>
+            <param name="message">The error message that explains the reason for the exception.</param>
+            <param name="innerException">The exception that is the cause of the current exception. If the <paramref name="innerException" /> parameter is not null, the current exception is raised in a catch block that handles the inner exception.</param>
+        </member>
+    </members>
+</doc>

packages/Microsoft.Bcl.1.1.10/lib/sl4/System.Runtime.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0"?>
+<doc>
+    <assembly>
+        <name>System.Runtime</name>
+    </assembly>
+    <members>
+        <member name="T:System.IProgress`1">
+            <summary>Defines a provider for progress updates.</summary>
+            <typeparam name="T">The type of progress update value.</typeparam>
+        </member>
+        <member name="M:System.IProgress`1.Report(`0)">
+            <summary>Reports a progress update.</summary>
+            <param name="value">The value of the updated progress.</param>
+        </member>
+        <member name="T:System.Runtime.CompilerServices.AsyncStateMachineAttribute">
+            <summary>Identities the async state machine type for this method.</summary>
+        </member>
+        <member name="T:System.Runtime.CompilerServices.StateMachineAttribute">
+            <summary>Identities the state machine type for this method.</summary>
+        </member>
+        <member name="M:System.Runtime.CompilerServices.StateMachineAttribute.#ctor(System.Type)">
+            <summary>Initializes the attribute.</summary>
+            <param name="stateMachineType">The type that implements the state machine.</param>
+        </member>
+        <member name="P:System.Runtime.CompilerServices.StateMachineAttribute.StateMachineType">
+            <summary>Gets the type that implements the state machine.</summary>
+        </member>
+        <member name="M:System.Runtime.CompilerServices.AsyncStateMachineAttribute.#ctor(System.Type)">
+            <summary>Initializes the attribute.</summary>
+            <param name="stateMachineType">The type that implements the state machine.</param>
+        </member>
+        <member name="T:System.Runtime.CompilerServices.CallerMemberNameAttribute">
+            <summary>
+            Allows you to obtain the method or property name of the caller to the method.
+            </summary>
+        </member>
+        <member name="T:System.Runtime.CompilerServices.CallerLineNumberAttribute">
+            <summary>
+            Allows you to obtain the line number in the source file at which the method is called.
+            </summary>
+        </member>
+        <member name="T:System.Runtime.CompilerServices.CallerFilePathAttribute">
+            <summary>
+            Allows you to obtain the full path of the source file that contains the caller.
+            This is the file path at the time of compile.
+            </summary>
+        </member>
+        <member name="T:System.Runtime.CompilerServices.IteratorStateMachineAttribute">
+            <summary>Identities the iterator state machine type for this method.</summary>
+        </member>
+        <member name="M:System.Runtime.CompilerServices.IteratorStateMachineAttribute.#ctor(System.Type)">
+            <summary>Initializes the attribute.</summary>
+            <param name="stateMachineType">The type that implements the state machine.</param>
+        </member>
+    </members>
+</doc>