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Emacs can edit remote files transparently (as if they were local).

Whenever Emacs asks for a file, you can indicate a remote file like so: /myname@remotehost:/remote/path/to/file. Emacs retrieves the file over SSH, FTP, or another method and takes care of saving it when you're done.

Emacs can record macros and execute them over a region.

use C-x-( to start recording
use C-x-) to end recording
use <esc>-x -> apply-macro-to-region-lines

kmacro-start-macro            C-x (
  Command: Record subsequent keyboard input, defining a keyboard macro.

kmacro-end-macro              C-x )
  Command: Finish defining a keyboard macro.

kmacro-end-or-call-macro      <f4>
  Command: End kbd macro if currently being defined; else call last kbd macro.

apply-macro-to-region-lines   M-x ... RET
  Command: Apply last keyboard macro to all lines in the region.

call-last-kbd-macro           M-x ... RET
  Command: Call the last keyboard macro that you defined with \[start-kbd-macro].
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