What's the proper way to use negative prompts in the filewords file?

[ARandomUserFromGithub]

I see that the addon supports negative prompts, but I'm not too sure how to implement that besides txt2img tab prompts that doesn'T seem to influence the training but only the generation of previews.
Isn't there a prompt template?

I used that format identically to txt files generated by SD, and it seems to work but I'm not 100% sure.
Line1: prompt text
Line2: Negative Prompt: prompt text