On an existing wiki: Create page using Create page from the activity contextual menu. Edit page using Edit page from the activity contextual menu. Edit section using edit section link from TOC. Create page using a non existing page link. Try cancel editing and check the page is not modified. Enter to edit a page Go offline and wait 30 seconds Via web, edit the page with a different user Go online again. Check a message is shown to notice the user: the version is not the same and data may be lost.