diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
new file mode 100644
index ab51782..99c891a
*** a/doc/src/sgml/runtime.sgml
--- b/doc/src/sgml/runtime.sgml
*************** pg_dumpall -p 5432 | psql -d postgres -p
*** 1815,1826 ****
  
     <listitem>
      <para>
!      On Linux, encryption can be layered on top of a file system
!      using a <quote>loopback device</quote>. This allows an entire
!      file system partition to be encrypted on disk, and decrypted by the
!      operating system. On FreeBSD, the equivalent facility is called
!      GEOM Based Disk Encryption (<acronym>gbde</acronym>), and many
!      other operating systems support this functionality, including Windows.
      </para>
  
      <para>
--- 1815,1826 ----
  
     <listitem>
      <para>
!      Storage encryption can be performed at the file system level or the
!      block level.  Linux file system encryption options include eCryptfs
!      and EncFS, while FreeBSD uses PEFS.  Block level or full disk
!      encryption options include dm-crypt + LUKS on Linux and GEOM
!      modules geli and gbde on FreeBSD.  Many other operating systems
!      support this functionality, including Windows.
      </para>
  
      <para>