Another command similar to 'm' is 't';
picks up lines 5 through 8 and makes a copy of them,
which it places after line 15. It differs from
'm' only in that the lines remain in their old place
as well as appearing in their new place. (Just like "cp"
and "mv" with files). In this directory is a file
"double". Using the editor, find the line containing
"-------" and make a copy of it at the