1 CAUSE_ERROR
 The CAUSE ERROR statement allows you to generate a  BASIC  run-time  error
 and transfer program control to a BASIC error handler.

 Example

 WHEN ERROR IN
       .
       .
       .
 CAUSE ERROR 11%
       .
       .
       .
 USE
    SELECT ERR
       CASE = 11
         PRINT "END OF FILE"
         CONTINUE
       CASE ELSE
          EXIT HANDLER
    END SELECT
 END WHEN

2 Syntax

     CAUSE ERROR err-num