

                          * MICROABC_FILE
                                  |
                                  V
                            [[ microabc ]] ==================;--------,
                                        |                    |        |
                                        V                    |        |
              * ABCPP_MUSIC_FILE     abcpp_macros_file       | scala_scl_file
                            |           |                    |        |
                            `-----+-----'       timidity_tuning_file  |
                                  |                          |        |
                                  V                          |        |
                             [[ abcpp ]]                     |        |
                                  |                          |        |
                                  V                          |        |
                            abc_music_file                   |        |
                                  |                          |        |
                            .-----'-----,                    |        |
                            |           |                    |        |
                            V           V                    |        |
                    [[ abcm2ps ]]   [[ abc2midi ]]           |        |
                            |           |                    |        |
                            V           V                    |        |
                 * POSTSCRIPT_FILE   * MIDI_FILE <--.        |        |
                      |                    |        |        |        |
                      |             .------'-----,  |        |        |
                      |             |            |  |        |        |
                      |             +------------------------'        |
                      |             |            |  |                 |
                      |             |            |  |   .-------------'
                      V             V            V  |   V
            [[ printer ]]   [[ timidity++ ]]   [[ scala ]]
                                    |
                                    V
                             * SOUND_FILE


