write-file

Write the buffer to a file.

Ctrl-x Ctrl-w

This command prompts for a file name, then writes the buffer to a file with that name. The file associated with the current buffer becomes that file, so subsequent uses of the save-file command will write the buffer to that file without asking for a file name. See also copy-to-file and save-file. As usual, typing Alt-g at the prompt inserts the current file name for editing.

Epsilon writes the file using the same line termination rules and encoding as it used when it read the file, perhaps altered by a subsequent use of the set-line-translate or set-encoding commands. With a numeric prefix argument, the write-file command first asks for a new translation rule and encoding.

More info:

Saving Files

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widen-buffer Command Reference write-files-and-exit