[Zope] LocalFS and creating files

Hi all, Am I to understand that LocalFS is only for reading files? The README is practically nonexistant and the Zope site only shows how to get files FROM the localfs mount. How do I use a manage_addImage to put a file into the mount? Is this possible? It does insinuate somewhere that this can be done, but no examples for a newbie like myself... Thanks again Zopistas, Paz