It is common for nextflow developers to include markdown documentation in a docs folder in the root of a project. To render one of these files in the “About” tab of the workflow interface on Latch, to provide motivation and instructions to users of the workflow, one provides the path of the desired file to the NextflowMetadata object. 
from pathlib import Path
from latch.types.metadata import NextflowMetadata

NextflowMetadata(
    name="some-workflow",
    about_page_path=Path("docs/about.md"),
    ...
)
Nextflow About GUI