You're seeing just the function eb, go back to MLLP.Envelope module for more information.

The MLLP End-Block character. In documentation it is often represented as <EB>. The eb is a single-byte character with the ASCII value 0x1C. This character is also know as "FS (File Separator)" and may appear as ^\ in text editors.


iex> MLLP.Envelope.eb