/*  Managing a lexicon with IDs  */
  
  /* load a lexicon and return a lexicon ID
   *  - input = filename (char *)
   *  - output = lexicon ID (int) */
  int load_lexicon(char *);
  int load_lexicon_first_field(char *);
  
  /* delete a lexicon
   *  - input = lexicon ID (int)
   *  - output = void */
  void delete_lexicon(int);
  
  /* get a string from a code
   *  - input = lexicon ID (int) + code (int)
   *  - output = 0 if the code is missing
   *             1 if the code is here
   *             the adress of the word string in (char **) */
  int code2word(int,int,char**);
  
  /* get a code from a string
   *  - input = lexicon ID (int) + word string (char*)
   *  - output = 0 if the word is not in the lexicon
   *             1 if the word is in the lexicon
   *             the code found in (int*) */
  int word2code(int,char*,int*);
  
  void reset_value_tree(int);
  
  int inc_freq_word(int, char*);
  
  void print_scored_text_tree(int);
  
  void print_distrib_text_tree(int);
  
  void add_word_lexicon(int, char*, int);
  
  int new_lexicon();
  
  #define False	0
  #define True	1