Need to Obtain Formatting Information for health Checks' output field


I hope a simple question.
I have not found the solution to this information in the docs

I understand health checks send data to the output field in the UI.

I need to be able to send multiple lines to the output field

I know that it can be done. Some hardware health Check data consists of several lines of data.

I know that the output field has a maximum of 4K characters.

I use linux bash

So I am asking what it takes to get health check to output multiple lines of data - formated

Unfortunately, I have found no documentation of the requirements of the output field

I look forward to your response on formatting the output fieldā€¦ or a URL to assist me with resolving this issue

Thanks in advance for your assistanceā€¦