GNU Emacs Manual - Hardcopy

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## Hardcopy Output

The Emacs commands for making hardcopy let you print either an entire buffer or just part of one, either with or without page headers. See also the hardcopy commands of Dired (see section Miscellaneous File Operations) and the diary (see section Commands Displaying Diary Entries).

`M-x print-buffer`
  Print hardcopy of current buffer with page headings containing the file name and page number.
`M-x lpr-buffer`
  Print hardcopy of current buffer without page headings.
`M-x print-region`
  Like `print-buffer` but print only the current region.
`M-x lpr-region`
  Like `lpr-buffer` but print only the current region.

The hardcopy commands (aside from the Postscript commands) pass extra switches to the `lpr` program based on the value of the variable `lpr-switches`. Its value should be a list of strings, each string an option starting with ``-'`. For example, to specify a line width of 80 columns for all the printing you do in Emacs, set `lpr-switches` like this:

    (setq lpr-switches '("-w80"))

You can specify the printer to use by setting the variable `printer-name`.

The variable `lpr-command` specifies the name of the printer program to run; the default value depends on your operating system type. On most systems, the default is `"lpr"`. The variable `lpr-headers-switches` similarly specifies the extra switches to use to make page headers. The variable `lpr-add-switches` controls whether to supply ``-T'` and ``-J'` options (suitable for `lpr`) to the printer program: `nil` means don't add them. `lpr-add-switches` should be `nil` if your printer program is not compatible with `lpr`.

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