How would you go about opening a Lemmy URL or foreign user name in your Lemmt client?

1. Let's say, you had a post URL on a foreign Lemmy server that is not registered with the URLs your Lemmy client handles (eg. https://feddit.org/post/1538082 ) and you don't want to make a public post with it inside.

How would you open it in your Lemmy client (eg. Jerboa or Racoon) to post a comment? Is it impossible? Does it work via your own instances web frontend maybe?

2. Let's say you have a username of a Lemmy user on another instance, eg. dogsoahC@lemm.ee , and you don't want to make a public post with it inside to create a mention as a workaround.

How can you DM them?