Functions to operate on handles

/* Get/Free handles    */
ham_entity_t *ham_entity_handle(int reserved, const char *ename, unsigned flags);
ham_condition_t *ham_condition_handle(int reserved, const char *ename,
                 const char *cname, unsigned flags);
ham_action_t *ham_action_handle(int reserved, const char *ename, const char *cname,
              const char *aname, unsigned flags);
int ham_entity_handle_free(ham_entity_t *ehdl);
int ham_condition_handle_free(ham_condition_t *chdl);
int ham_action_handle_free(ham_action_t *ahdl);

You use the handle functions to get/free handles based on entity, condition, and action names. You can then use these handles later to add or remove conditions and actions.