BDS Binary Data Structure
To transfer binary data in a single data segment, convey a critical filter for transmission and allow identification of the end of the data segment through a count; there is no identification of the internal structure of the binary data in this segment
Code specifying the type of filter used to convert data code values
The length in integral octets of the binary data
BDS02 is the length of the data in BDS03 after application of the filter indicated by BDS01. For example; a 1000 byte binary file that has been filtered using Base 64 encoding (value 'B64' in BDS01) will have a value of 1336 in the BDS02.
A string of octets which can assume any binary pattern from hexadecimal 00 to FF