+ The <option>-H</option> and <option>-B</option> options
+ specify extra, temporary hypervisor and backend parameters
+ that can be used to start an instance with modified
+ parameters. They can be useful for quick testing without
+ having to modify an instance back and forth, e.g.:
+ <screen>
+# gnt-instance start -H root_args="single" instance1
+# gnt-instance start -B memory=2048 instance2
+ </screen>
+ The first form will start the instance
+ <userinput>instance1</userinput> in single-user mode, and
+ the instance <userinput>instance2</userinput> with 2GB of
+ RAM (this time only, unless that is the actual instance
+ memory size already).
+ </para>
+
+ <para>