Loading Fields initiated by Piped delimited data into external table.

Q1. How to display fields in external table whose delimiter starts with |

Normally we have data where the field is terminated with |, here i have a field started with |

Oracle treats COL1 as second column and so on. The last column is not shown.

Q2. When i load data from external table into actual table, i want to filter the header and footer data, and load only the piped delimited data. How do i do that?
The problem here is that even the header is delimited and i want to filter it
**************

DROP TABLE mytable CASCADE CONSTRAINTS;

CREATE TABLE mytable
(
  col1           VARCHAR2(500 BYTE),
  col2           VARCHAR2(500 BYTE),
  col3           VARCHAR2(500 BYTE)
)
ORGANIZATION EXTERNAL
  (  TYPE ORACLE_LOADER
     DEFAULT DIRECTORY mydir
     ACCESS PARAMETERS
       ( RECORDS DELIMITED BY NEWLINE
        NODISCARDFILE
        NOLOGFILE
        FIELDS TERMINATED BY '|' -->In my case a field starts by |, and thus last record col3 is not displayed
        MISSING FIELD VALUES ARE NULL
            REJECT ROWS WITH ALL NULL FIELDS
        (
  col1,
  col2,
  col3
        )
          )
     LOCATION (EXT_DATA:'myfile.dl')
  )
REJECT LIMIT 0
NOPARALLEL
NOMONITORING;


*****
Data:
*****
START-OF-FILE
START-OF-HEADER
EXECUTION-DATE=2013-01-01-13.10.41.000152
FILE-DATE=Wed JAN 01 00:00:00 BST 2013
PROGRAM-NAME=ABC
FEED-NAME=MYFEED
CONSUMER=NA
END-OF-HEADER
START-OF-DATA
-->Fields are initiated by a delimiter
|COL1                          |COL2                           |COL3              
|A1180137                 |10003                    |2013-04-02
|A1100970                 |10003                    |2013-04-02
END-OF-DATA
START-OF-TRAILER
EXECUTION-DATE=2013-05-08-13.10.41.000250
FILE-DATE=Wed Apr 03 00:00:00 BST 2013
PROGRAM-NAME=GPS
FEED-NAME=SWAP_ADJUSTMENT
RECORD COUNT= 1125
END-OF-TRAILER
END-OF-FILE