什么是talk
留言：留言测试--Lanvana (talk) 21:59, 25 September 2015 (CST)
留言：照片赞--孙成伟 (talk)
留言：可否上传下蔡老师的PPT？————王小珊
留言：我看到的Mediawiki:Sidebar上只能read不能edit。——王小珊
