This is a major feature release which introduces the new graphical user interface written by Michael Bieri. This GUI provides easy access to a sub-set of relax's features - the R1 and R2 relaxation rate curve-fitting, NOE calculations, and the fully automatic model-free analysis of the dauvergne_protocol module (d'Auvergne and Gooley, 2008, JBNMR, 40, 121). The new relax versions can be downloaded from either http://nmr-relax.com/download.html or http://download.gna.org/relax/. If binary distributions are not yet available for your platform and you manage to compile the binary modules, please consider contributing these to the relax project (described in section 3.6 of the relax manual). The full list of changes is: Features: * The addition of Michael Bieri's graphical user interface - relaxGUI. Changes: * Improvements to the HTML version of the user manual (http://www.nmr-relax.com/manual/1.3/relax.html). Bugfixes: N/A All developmental details can be seen in the SVN logs of the bieri_gui branch (http://svn.gna.org/viewcvs/relax/branches/bieri_gui/?pathrev=12386), or by typing: $ svn log -v --stop-on-copy http://svn.gna.org/svn/relax/branches/bieri_gui@r12386 | less