RAR
This was one of the most requested features to add and I'm sure everyone will agree it's a welcome addition.
This is what the RAR tab looks like:
You can download RAR files containing UT2004 maps and use this tab to preview them as well as un-RAR the files to their proper directories.
To use this feature you either drag-and-drop the RAR files into the box
labeled "Drop files here" or click the "Open RAR file(s)".
Once a RAR file has been dropped or opened, the appropriate buttons will be
enabled.
Press the "Process Loaded RAR" button to un-RAR the files into their proper directories.