From SwissExperiment

SVN Upload

The classical wiki does not support upload of large files through the standard 'Upload file' interface provided on the left pane. You can now upload your large files (Images or others) to the svn, through the wiki interface.

At the following url, you can browse the files from the svn for the wiki. Click on the 'Browse the SVN'. You will see the list of files in the svn repository. The target files should be commited to the svn beforehand. You can now select the required file, rename it as required, and hit the 'Add Image' button.

http://www.swiss-experiment.ch/index.php/Special:AddFromSVN

Your files are saved in the SVNImage namespace.