Document Type

You can create five different types of document from a mail merge.

Letters

Word creates a new letter for each set of merge data

E-mail Messages

Envelopes

Word creates a new envelope for each set of merge data

Labels

Word creates new labels for each set of merge data

Directory

When you create a directory Word creates only one new document that contains all the merged data.
Word repeats any standard text you add to the catalog main document for each data set.
This is useful if you want to print a list of information from a database.