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diff --git a/examples/manual/front.y b/examples/manual/front.y
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+/* C code supplied at the beginning of the file.  */
+
+%{
+
+#include <stdio.h>                          
+#include <string.h>
+
+extern int  yylexlinenum;                   /* these are in YYlex      */
+extern char *yytext;                        /* current token           */
+
+
+%}
+
+/* Keywords and reserved words begin here.  */
+
+%union{                                     /* this is the data union  */
+    char   name[128];                       /* names                   */
+}
+
+/*-------------------- the reserved words -----------------------------*/
+
+%token PERIOD
+%token NEWLINE
+%token POSITIONAL
+
+%token VERB
+%token ADVERB
+
+%token PROPER_NOUN
+%token NOUN
+
+%token DECLARATIVE
+%token CONDITIONAL
+
+
+%type  <name> declarative
+%type  <name> verb_phrase
+%type  <name> noun_phrase
+%type  <name> position_phrase
+%type  <name> adverb
+
+%type  <name> POSITIONAL VERB ADVERB PROPER_NOUN 
+%type  <name> NOUN DECLARATIVE CONDITIONAL
+
+%%
+
+sentence_list : sentence
+              | sentence_list NEWLINE sentence
+              ;
+
+
+sentence : verb_phrase noun_phrase position_phrase adverb period 
+           {
+             printf("I understand that sentence.\n");
+             printf("VP = %s \n",$1);
+             printf("NP = %s \n",$2);
+             printf("PP = %s \n",$3);
+             printf("AD = %s \n",$4);
+           }
+         | { yyerror("That's a strange sentence !!");  }
+         ;
+
+position_phrase : POSITIONAL  declarative PROPER_NOUN 
+                  {
+                    sprintf($$,"%s %s %s",$1,$2,$3);
+                  }   
+                | /* empty */ { strcpy($$,""); }
+                ;
+               
+
+verb_phrase : VERB { strcpy($$,$1); strcat($$," "); }
+            | adverb VERB  
+              {
+                sprintf($$,"%s %s",$1,$2);
+              }
+            ;
+
+adverb : ADVERB      { strcpy($$,$1); }
+       | /* empty */ { strcpy($$,""); }
+       ;
+
+noun_phrase : DECLARATIVE NOUN 
+              {
+                sprintf($$,"%s %s",$1,$2);
+              }
+            | CONDITIONAL declarative NOUN 
+                  {
+                    sprintf($$,"%s %s %s",$1,$2,$3);
+                  }   
+            | NOUN { strcpy($$,$1); strcat($$," "); }
+            ;
+
+declarative : DECLARATIVE { strcpy($$,$1); }
+            | /* empty */ { strcpy($$,""); }
+            ;
+
+period : /* empty */
+       | PERIOD
+       ;
+
+
+%%
+
+/* Supplied main() and yyerror() functions.  */
+
+int main(int argc, char *argv[])
+{
+  yyparse();   /* parse the file          */
+  return(0);
+}
+
+int yyerror(char *message)
+{
+  extern FILE *yyout;
+
+  fprintf(yyout,"\nError at line %5d. (%s) \n",
+                     yylexlinenum,message);
+}