@c This is part of the Emacs manual.
-@c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2015 Free Software
+@c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2016 Free Software
@c Foundation, Inc.
@c See file emacs.texi for copying conditions.
@iftex
@chapter Miscellaneous Commands
This chapter contains several brief topics that do not fit anywhere
-else: reading Usenet news, viewing PDFs and other such documents, web
+else: reading Usenet news, host and network security,
+viewing PDFs and other such documents, web
browsing, running shell commands and shell subprocesses, using a
single shared Emacs for utilities that expect to run an editor as a
subprocess, printing, sorting text, editing binary files, saving an
Exit the summary buffer and return to the group buffer.
@end table
+@node Host Security
+@section Host Security
+@cindex security
+
+Emacs runs inside an operating system such as GNU/Linux, and relies on
+the operating system to check security constraints such as accesses to
+files. The default settings for Emacs are designed for typical use;
+they may require some tailoring in environments where security is more
+of a concern, or less of a concern, than usual. For example,
+file-local variables can be risky, and you can set the variable
+@code{enable-local-variables} to @code{:safe} or (even more
+conservatively) to @code{nil}; conversely, if your files can all be
+trusted and the default checking for these variables is irritating,
+you can set @code{enable-local-variables} to @code{:all}. @xref{Safe
+File Variables}.
+
+@xref{Security Considerations,,, elisp, The Emacs Lisp Reference
+Manual}, for more information about security considerations when using
+Emacs as part of a larger application.
@node Network Security
@section Network Security
web browser for @code{browse-url}, @pxref{Browse-URL}. For full
details, @pxref{Top, EWW,, eww, The Emacs Web Wowser Manual}.
+@node Embedded WebKit Widgets
+@section Embedded WebKit Widgets
+@cindex xwidget
+@cindex webkit widgets
+@cindex embedded widgets
+
+@findex xwidget-webkit-browse-url
+@findex xwidget-webkit-mode
+@cindex Xwidget-WebKit mode
+ If Emacs was compiled with the appropriate support packages, it is
+able to show browser widgets in its buffers. The command @kbd{M-x
+xwidget-webkit-browse-url} asks for a URL to display in the browser
+widget. The URL normally defaults to the URL at or before point, but
+if there is an active region (@pxref{Mark}), the default URL comes
+from the region instead, after removing any whitespace from it. The
+command then creates a new buffer with the embedded browser showing
+the specified URL. The buffer is put in the Xwidget-WebKit mode
+(similar to Image mode, @pxref{File Conveniences}), which provides
+one-key commands for scrolling the widget, changing its size, and
+reloading it. Type @w{@kbd{C-h b}} in that buffer to see the key
+bindings.
+
@node Shell
@section Running Shell Commands from Emacs
@cindex subshell
text in the buffer. To give input to the subshell, go to the end of
the buffer and type the input, terminated by @key{RET}.
+ By default, when the subshell is invoked interactively, the
+@file{*shell*} buffer is displayed in a new window. This behavior can
+be customized via @code{display-buffer-alist} (@pxref{Window Choice}).
+
While the subshell is waiting or running a command, you can switch
windows or buffers and perform other editing in Emacs. Emacs inserts
the output from the subshell into the Shell buffer whenever it has
process.
You can solve this problem by setting up Emacs as an @dfn{edit
-server}, so that it listens for external edit requests and acts
+server}, so that it ``listens'' for external edit requests and acts
accordingly. There are two ways to start an Emacs server:
@itemize
@findex htmlfontify-buffer
Aside from the commands described in this section, you can also
print hardcopies from Dired (@pxref{Operating on Files}) and the diary
-(@pxref{Displaying the Diary}). You can also print an Emacs
+(@pxref{Displaying the Diary}). You can also ``print'' an Emacs
buffer to HTML with the command @kbd{M-x htmlfontify-buffer}, which
converts the current buffer to a HTML file, replacing Emacs faces with
CSS-based markup. Furthermore, Org mode allows you to print Org