- * not</emphasis> be zero. @method is a mask of constants to specify the
- * direction and the split method (see below). @size is the size of the split.
- * @wintype is the type of window you're creating, and @rock is the rock.
+ * not</emphasis> be zero. @method specifies the direction and the split method
+ * (see below). @size is the size of the split. @wintype is the type of window
+ * you're creating, and @rock is the rock.
+ *
+ * The method argument must be the logical-or of a direction constant
+ * (%winmethod_Above, %winmethod_Below, %winmethod_Left, %winmethod_Right) and a
+ * split-method constant (%winmethod_Fixed, %winmethod_Proportional).