About Trigger token

[lxr-1204]

Thank you for your excellent work.
After reading your articles and briefly reviewing your code, I have a question to consult you about: You repeatedly mention the
Trigger token in the paper, but in the actual code, I haven't found any occurrence of "trigger" or "trigger token."
Could you please provide guidance on the implementation of the trigger? Thank you again.

[waxnkw]

Sorry. It is <at> in the code.

BTW, I just notice that the <at> will not be shown if I do not add a \ before < and >. So, I type in "it is <at> in the code" before and it become "it is in the code".