+int key_compare (const void *p1, const void *p2);
+void key_logdump (int mask, const void *p);
+void key_input (const char *dict_fname, const char *isam_fname,
+ const char *key_fname, int cache);
+int key_sort (const char *key_fname, size_t mem);
+
+#define FNAME_WORD_DICT "worddict"
+#define FNAME_WORD_ISAM "wordisam"
+#define FNAME_FILE_DICT "filedict"
+#define FNAME_SYS_IDX "sysidx"
+#define SYS_IDX_ENTRY_LEN 120
+
+struct strtab *strtab_mk (void);
+int strtab_src (struct strtab *t, const char *name, void ***infop);
+void strtab_del (struct strtab *t,
+ void (*func)(const char *name, void *info, void *data),
+ void *data);
+int index_char_cvt (int c);