It is very common to have two address
lines in a customer table, one for street address (Address 1), and one that can
be used for a suite number or mail stop (Address 2). Address 1 usually contains
a value, but Address 2 is often blank. If you create a customer list using this
data and stack the fields on top of one another in mailing label format, those
customer records with an empty Address 2 field will print with a blank line.
You can eliminate this blank line either by using multiple sections, or by
suppressing blank lines.