Import/export

You can easily import URLs into your roster window using the Import… menu option.
You can import OPML files, like the ones used by feed readers, plain HTML files, like the bookmarks files generated by web browsers and also CSV files like the files generated by most spreadsheet apps.
All links contained in the file will be imported and selected in the roster window.

You can also export all the URLs contained in yuor roster window using the Export… menu option.
Supported export formats include OPML, HTML and CSV as above, but also plain text, in case you need a simple textual list of your URLs.