c-x 1 关闭其它窗口
c-u 8 其它命令 重复8次
c-d 删除一个字符
m-d 删除一个字
C-k Kill from the cursor position to end of line
M-k Kill to the end of the current sentence
c-h k 其它命令 查帮助
c-h m to see how Text mode differs from Fundamental mode
c-k 剪切
c-y 粘贴
m-y 还原
C-x C-b List buffers
C-x Character eXtend. Followed by one character.
M-x Named command eXtend. Followed by a long name
C-x C-f Find file
C-x C-s Save file
C-x s Save some buffers
C-x C-b List buffers
C-x b Switch buffer
C-x C-c Quit Emacs
C-x 1 Delete all but one window
C-x u Undo
c-s 搜索
c-r 反向搜索