In the "Folder contents" view of the folder, check the box next to
the content object(s) which you would like to move or copy.
Click the "Cut" button (or the "Copy" button, if you wish to create
a copy in the new location rather than moving the content).
The system will set a cookie on your browser (you must have cookies
enabled) representing the items you cut or copied.
Navigate to the folder into which you wish to move or copy the
content (which might be the same folder).
Click the "Paste" button. The system will move or copy the content
into the folder; new content whose IDs would conflict with exising
content in that folder will receive an auto-generated name, typically
copy_of_ plus the original ID.