+ <para>Each command line is split on
+ whitespace, with the first item being
+ the command to execute, and the
+ subsequent items being the arguments.
+ Double quotes ("...") and single
+ quotes ('...') may be used, in which
+ case everything until the next
+ matching quote becomes part of the
+ same argument. Quotes themselves are
+ removed after parsing. In addition, a
+ trailing backslash
+ (<literal>\</literal>) may be used to
+ merge lines. This syntax is intended
+ to be very similar to shell syntax,
+ but only the meta-characters and
+ expansions described in the following
+ paragraphs are understood.
+ Specifically, redirection using
+ <literal><</literal>,
+ <literal><<</literal>,
+ <literal>></literal>, and
+ <literal>>></literal>, pipes
+ using <literal>|</literal>, and
+ running programs in the background
+ using <literal>&</literal>
+ and <emphasis>other elements of shell
+ syntax are not supported</emphasis>.
+ </para>
+