If you go through the Prettier's Prose Wrap documentation, you can see that it provides 3 options, that is
"always"- Wrap prose if it exceeds the print width."never"- Do not wrap prose."preserve"- Wrap prose as-is. (First available in v1.9.0)
Now, this does not exactly give a clear idea on what each feature does, and it
could be a little confusing especially between the "never" and "preserve"
options.
In the below video we walk you through these options and tries to get you a clear idea on Prettier's Prose Wrap and its use-case.