Double slashes (\\) indicate a hard break in the addressee/salutation. When the addressee/salutation is printed it will print on two lines each time.
The data after the \ will print on the next line.
Mr. William H. Smith and\ Mrs. Margaret A. Smith will print like this:
Mr. William H. Smith and
Mrs. Margaret A. Smith
Note: The backslash appears in the addressee/salutation on the constituent's record to indicate that a conditional or hard break exists. It will not show when printing labels and other mailing functions, reports, and exports.