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+Introduction
+------------
+
+This version 0.1 specification aims to describe the NDN packet format only, a much narrower scope than a full NDN protocol specification. Our plan is to circulate and finalize the packet format first, then write down the full protocol specification. 
+
+In addition to this protocol specification draft, we are also in the process of putting out a set of technical memos that document our reasoning behind the design choices of important issues.  The first few to come out will address the following issues:
+
+- Packet fragmentation: end-to-end versus hop-by-hop;
+
+- Understanding the tradeoffs of (not) handling Interest selectors;
+
+- NDN Name discovery: why do we need it?
+
+- NDN naming convention; and
+
+- Scaling NDN routing.
+
+In the rest of the document, we assume readers are familiar with how NDN/CCN works in general. For a description of the current CCNx protocol definition, please refer to `<http://www.ccnx.org/releases/latest/doc/technical/CCNxProtocol.html>`_.