Monocle would not allow me to login using WithKnown, saying there was no microsub endpoint. This was because in upgrading Known, I had forgotten that I had added the link to microsub before. I had also forgotten which of the hundreds of template files I had to edit in order to do that. In the end I found it with a brute-force search for all files ending in .tpl.php The file in question lives at ./IdnoPlugins/IndiePub/templates/default/indiepub/shell/head.tpl.php.
Having found the correct file to edit, the rest was straightforward thanks to excellent instructions.
Two ways to respond: webmentions and comments
Webmentions
Webmentions allow conversations across the web, based on a web standard. They are a powerful building block for the decentralized social web.
“Ordinary” comments