Vi how to see control characters
This is a good explination
http://vim.1045645.n5.nabble.com/How-to-show-all-the-control-characters-td1172632.html
http://vim.1045645.n5.nabble.com/How-to-show-all-the-control-characters-td1172632.html
Vim vi how to reload a file your editing
5.8. How do I reload/re-edit the current file? You can use the ":edit" command, without specifying a file name, to reload the current file. If you have made modifications to the file, you can use ":edit!" to force the reload of the current file (you will lose your modifications). For more information, read :help :edit :help :edit! :help 'confirm' from - http://vimdoc.sourceforge.net/cgi-bin/vimfaq2html3.pl#5.8
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