Arborescence
============


.. code-block:: text

    sd_matr_elem (K19) ::=record


    (o) '.RERR' : OJB S V K24 long=3

    (f) '.RELR' : OJB S V K24 long=*


.. code-block:: text

    sd_vect_elem (K19) ::=record


    (o) '.RERR' : OJB S V K24 long=1

    (f) '.RELR' : OJB S V K24 long=*

    (f) '.RELC' : OJB XC V I NO