In newer nanos (2.4.0 and up), Alt+P should switch on visible spaces and tabs by default. In earlier nanos you can enable this by doing something like 'set whitespace ".>"' in your ~/.nanorc.
Benno -- http://www.fastmail.com - Send your email first class -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

