Getting the source code
From AbiWiki
Once you have a commit access to AbiWord you use subversion to get the main tree and plugins with this command (where "<username>" is you svn access name):
svn co svn+ssh://<username>@svn.abisource.com/svnroot/abiword/trunk abiword
If you need to get the 2.6 branch do:
svn co svn+ssh://<username>@svn.abisource.com/svnroot/abiword/branches/ABI-2-6-0-STABLE/ abiword-2.6 svn co svn+ssh://<username>@svn.abisource.com/svnroot/abiword-plugins/branches/ABI-2-6-0-STABLE/ abiword-plugins-2.6
After the 2.6 branch the plugins have been integrated into the main build system.