Allow nograph, nodisplay and graph_format in identification

doc/dynare.texi

@@ -5784,6 +5784,15 @@ Specify the parameter set to use. Default: @code{prior_mean}
 @item kalman_algo = @var{INTEGER}
 @xref{kalman_algo}.
 
+@item nograph
+@xref{nograph}.
+
+@item nodisplay
+@xref{nodisplay}.
+
+@item graph_format = @var{FORMAT}
+@xref{graph_format}.
+
 @end table
 
 @end deffn

preprocessor/DynareBison.yy

@@ -1604,6 +1604,9 @@ identification_option : o_ar
                       | o_parameter_set
                       | o_lik_init
                       | o_kalman_algo
+                      | o_nograph
+                      | o_nodisplay
+                      | o_graph_format
                       ;
 
 model_comparison : MODEL_COMPARISON mc_filename_list ';'