"List all newsgroups with unread articles of level LEVEL or lower.
Use the `gnus-group-topics' to sort the groups.
If ALL is non-nil, list groups that have no unread articles.
"List all newsgroups with unread articles of level LEVEL or lower.
Use the `gnus-group-topics' to sort the groups.
If ALL is non-nil, list groups that have no unread articles.