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DAG-Edit 1.400-beta-1 released

John Richter john.richter at
Thu Jul 24 11:29:47 PDT 2003

DAG-Edit 1.400-beta-1 is now available. Get your copy at

This is truly a beta release. This version is NOT INTENDED FOR PRODUCTION 
WORK. Please download this version only if you are interested in beta-testing 
DAG-Edit and the new OBO flat file format.

This version of DAG-Edit contains a completely rebuilt core. All the 
datamodels and the undo system have been rebuilt around history items, which 
should allow us to do some very interesting things with version checking. 
DAG-Edit now incorporates all the concepts developed in the OBO file format 
spec, including:

    * Support for multiply rooted graphs
    * Full support for disconnected/cyclical graphs
    * Special storage and treatment of obsolete terms
    * Support for annotation of replacement terms to obsolete terms (to do 
this, just drag the replacement term onto the obsolete term)
    * Teatment of relationship types as terms
    * A built in definition of the is_a relationship type from which all other 
type definitions derive
    * Support for synonym types 

and many other changes.

Further, the entire display caching system has been redesigned, which should 
allow for much faster selection, editing, and searching.

If you encounter any problems, or just can't understand how a feature works, 
please email me or submit a bug report on sourceforge.


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