Format Description:
Date "D" - no field length or precision
NOTE: format "Ymd"
Logic "L" - no field length or precision
NOTE: must be entered as either "T" or "F"
Character "C" - field length no precision
NOTE: string will be truncated at given length
Numeric "N" - field length with precision
NOTE: Numeric includes precision
eg "45" = Length: 2, Precision: 0
eg "45.1" = Length:4, Precision:1