How do I make my custom taxonomy base/permalink words separated by a hyphen? eg. abc-xyz
WP allows it for tags... that is the tag permalink will show http://www.qwerty.com/abc-xyz/tag1
How can I achieve this hyphenation with custom taxonomies? It appears WP only allows underscores eg. http://www.qwerty.com/abc_xyz/cutomtax1
thanks
Pete