* @minimum: (out) (optional): location to store the minimum size
* @natural: (out) (optional): location to store the natural size
* @minimum_baseline: (out) (optional): location to store the baseline
- * position for the minimum size
+ * position for the minimum size, or -1 to report no baseline
* @natural_baseline: (out) (optional): location to store the baseline
- * position for the natural size
+ * position for the natural size, or -1 to report no baseline
*
* Measures @widget in the orientation @orientation and for the given @for_size.
*