When you have "several" e-mail address in your Address Book..., you might want to create a backup copy!
or..., You might want to "send" your Address Book to a friend.

Here's how...,

To Save your Address Book to an .ldif file...,
Choose the appropriate directory to save your address book in, or Create a New Directory.

"Click-on" Save.., to Save the Address Book to your hard drive.
As with other files you Save..., remember where you put your file!

Remember..., You can "change the name" of the File (if you like) after Saving.