The User Data rollout appears when the USER-DEFINED FUNCTION is chosen from the Function list. It allows you to enter the contents of the custom request. Type in hexadecimal numbers (characters 0-9, A-F, either lowercase or uppercase).
The context menu offers you the following functions:
DD AA B5(3 bytes) sequence displayed in result pane will result in bytes
0xB5written into the output file. The resulting file can subsequently be used by some other application for additional processing.