+@node GnuPG and EasyPG Assistant Configuration
+@appendix GnuPG and EasyPG Assistant Configuration
+
+In Emacs 23 or later there is an option @code{auto-encryption-mode} to
+automatically decrypt @code{*.gpg} files and it is enabled by default
+so there is no setting is needed. If you are using earlier versions
+of Emacs for some reason, you will need:
+
+@lisp
+(require 'epa-file)
+(epa-file-enable)
+@end lisp
+
+If you want your GnuPG passwords to be cached, setup @code{gpg-agent}
+or EasyPG Assitant
+@pxref{Caching Passphrases, , Caching Passphrases, epa}
+
+For those who are using older vesions of Emacs, here are some portion
+copied from the EasyPG Assitant manual:
+
+Here are some questions:
+
+@enumerate
+@item Do you use GnuPG version 2 instead of GnuPG version 1?
+@item Do you use symmetric encryption rather than public key encryption?
+@item Do you want to use gpg-agent?
+@end enumerate
+
+Here are configurations depending on your answers:
+
+@multitable {111} {222} {333} {configuration configuration configuration}
+@item @b{1} @tab @b{2} @tab @b{3} @tab Configuration
+@item Yes @tab Yes @tab Yes @tab Nothing to do.
+@item Yes @tab Yes @tab No @tab You can't, without gpg-agent.
+@item Yes @tab No @tab Yes @tab Nothing to do.
+@item Yes @tab No @tab No @tab You can't, without gpg-agent.
+@item No @tab Yes @tab Yes @tab Set up elisp passphrase cache.
+@item No @tab Yes @tab No @tab Set up elisp passphrase cache.
+@item No @tab No @tab Yes @tab Nothing to do.
+@item No @tab No @tab No @tab You can't, without gpg-agent.
+@end multitable
+
+To setup gpg-agent, follow the instruction in GnuPG manual.
+@pxref{Invoking GPG-AGENT, , Invoking GPG-AGENT, gnupg}.
+
+To set up elisp passphrase cache, set
+@code{epa-file-cache-passphrase-for-symmetric-encryption}.
+