Full documentation upon tag of le?

alex

Hello,

To the tag le, I only can find the following line on the document at https://docs.wordops.net/commands/site/

-letsencrypt,-le secure site with Let's Encrypt SSL certificate
--letsencrypt=wildcard secure site/multisite with a wildcard SSL certificates
--letsencrypt=off disable Let's Encrypt SSL certificate

But I note someone use the tag in this way:

le=clean

So, where is it from? Is there a full document of le?

Thanks so much