-This is a placeholder for TinyOS 2.0. When it is released you will find the source for
-it here.
+This contains the TinyOS 2.0 source code as of
+
+$Date$
+
+This tree includes the TinyOS 2.0 documentation in tinyos-2.x/doc;
+you can also find the documentation online at:
+http://www.tinyos.net/tinyos-2.x/doc/
+
+The basic directory structure is as follows:
+
+apps: Sample TinyOS applications.
+ tests: Sample TinyOS applications which test a part of the system.
+
+doc: Documentation
+ index.html: Index file to all documentation
+ txt: Text files (TEPs)
+ html: HTML files (TEPs, installation)
+ html/tutorial: Tutorials
+
+support: Non-nesC code for using TinyOS nodes
+ make: TinyOS make system
+ sdk: Standard developers kit: serial communication, etc.
+ c: C SDK (fully supported, but not exhaustively tested yet)
+ java: Java SDK (fully supported, heavily tested and used)
+ python: Python SDK (limited, not fully supported)
+
+tools: TinyOS-specific tools and scripts
+ platforms: Platform-specific tools
+ release: Scripts and configurations for packaging release RPMs
+ tinyos: TinyOS scripts
+ java: Native support for TinyOS JNI libraries (serial and env)
+ misc: Assorted utility scripts, begininning with tos-
+ ncc: The scripts that invoke the nesC compiler: ncc, mig, ncg
+
+tos: TinyOS source code (nesC, C)
+ chips: Chip-specific code
+ interfaces: Core system interfaces
+ lib: Extensions and larger common subsystems
+ platforms: Platform-specific code
+ sensorboards: Sensorboard drivers
+ system: Core system components
+ types: Core system data types (header files)
+
+You can find documentation for the 2.0.0 release online at:
+http://www.tinyos.net/tinyos-2.x/doc/
+