eopkg has good help output. No need to wonder what rr or dr do when it tells you.
β― eopkg -help |grep repo
add-repo (ar) - Add a repository
disable-repo (dr) - Disable repository
enable-repo (er) - Enable repository
list-available (la) - List available packages in the repositories
list-newest (ln) - List newest packages in the repositories
list-repo (lr) - List repositories
remove-repo (rr) - Remove repositories
update-repo (ur) - Update repository databases