/** Starts the DFLL of the XMEGA microcontroller, with the given options.
*
* \param[in] Source RC Clock source for the DFLL, a value from \ref XMEGA_System_ClockSource_t.
- * \param[in] Reference Reference clock source for the DFLL, an value from \ref XMEGA_System_DFLLReference_t
+ * \param[in] Reference Reference clock source for the DFLL, an value from \ref XMEGA_System_DFLLReference_t.
* \param[in] Frequency Target frequency of the DFLL's output.
*
* \return Boolean \c true if the DFLL was successfully started, \c false if invalid parameters specified.