Github #237: scrollbar.align documentation.

FL/Fl_Browser_.H

@@ -205,6 +205,18 @@ public:
 
   /**
     Vertical scrollbar. Public, so that it can be accessed directly.
+    
+    Use `scrollbar_left()` or `scrollbar_right()` to change what side 
+    the vertical scrollbar is drawn on.
+    
+    Use `scrollbar.align(int)` (see `Fl_Widget::align(Fl_Align)`)
+    to change what side either of the scrollbars is drawn on.
+
+    If the `FL_ALIGN_LEFT` bit is on, the vertical scrollbar is on 
+    the left. If the `FL_ALIGN_TOP` bit is on, the horizontal 
+    scrollbar is on the top. Note that only the alignment flags in 
+    scrollbar are considered. The flags in hscrollbar however 
+    are ignored.
    */
   Fl_Scrollbar scrollbar;
   /**