Index: main/grid/model.lisp
===================================================================
--- main/grid/model.lisp	(revision main,56)
+++ main/grid/model.lisp	(revision main,57)
@@ -18,10 +18,10 @@
    "Returns the number of columns of data."))
 
-#|(defgeneric header-columns (grid-data)
+(defgeneric header-columns (grid-data)
   (:documentation
    "Returns the number of columns that contain header data, and may be
 considered for locking in place during scrolling operations.  Header
 columns are always at the left of the grid (from column 0).")
-  (:method (grid-data) 0))|#
+  (:method (grid-data) 0))
 
 (defgeneric column-width (grid-data column)