Tested wit 3.8.1 only, but could work with previous versions..
Double click on the tab to change the column name..
In the tab, click x to remove the tab..
Options., so you can make the column sortable.
On the header click + to add new element..
Just search for custom columns and click install...
Upload custom-columns-Dir to the wp-content plugins directory.
Activate the plugin through 'Plugins WordPress.
The following people have contributed to this plugin..
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
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