Hi, > Could you put an example when it is useful?
The typical use case is when copy-pasting source code (or any kind of indented text) into text editors that do their own intentation, and the two add up together and produce a staircase effect. With this feature text editors can temporarily switch off autoindent. See e.g. http://stackoverflow.com/questions/5585129/pasting-code-into-terminal-window-into-vim-on-mac-os-x (especially the 2nd comment) hope that helps, egmont
