diff --git a/presentations/1hr-GPL/1hr-GPL.markdown b/presentations/1hr-GPL/1hr-GPL.markdown
index b068380..c6e25de 100644
--- a/presentations/1hr-GPL/1hr-GPL.markdown
+++ b/presentations/1hr-GPL/1hr-GPL.markdown
@@ -372,3 +372,36 @@ conveying of source, or (2) access to copy the
 Corresponding Source from a network server at no charge.
 </p>
 </span>
+
+
+# GPLv3 &sect; 1 &para; 1, 4-6
+
+<span class="fitonslide">
+<p>
+The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+<br/>
+<br/>
+The "Corresponding Source" for a work in object code form means all the
+source code needed to generate, install, and (for an executable work) run the
+object code and to modify the work, including scripts to control those
+activities.  However, it does not include the work's System Libraries, or
+general-purpose tools or generally available free programs which are used
+unmodified in performing those activities but which are not part of the work.
+For example, Corresponding Source includes interface definition files
+associated with source files for the work, and the source code for shared
+libraries and dynamically linked subprograms that the work is specifically
+designed to require, such as by intimate data communication or control flow
+between those subprograms and other parts of the work.
+<br/>
+<br/>
+The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+<br/>
+<br/>
+The Corresponding Source for a work in source code form is that
+same work.
+</p>
+</span>