+<function>profile_on</function> can be invoked multiple times, and
+on subsequent invocations, it will delete profiling data
+and allocate a fresh profiling range.
+ </para>
+ <para>
+Profiling can be turned off using the function
+<function>profile_off</function>:
+<programlisting>
+void profile_off(void);
+</programlisting>
+This will also reset any existing profile data.
+ </para>
+ <para>