Change Title and Author Information
The File: Info command (quick key Ctrl+i) will allow you to change the title, author and copyright information for a song.
For added control (adding the title to each printed page, adding extra comments to first printed page, etc), use Insert: Object... PageTxtMaestro.nw and PageTxt.nw.
Go to File: Open Sample..., PageTxtMaestro.nwc to see an example of the objects being used.