An !: in Business Rules! code performs a line continuation.
More than one clause (or statement) can reside on a single line when the statements are separated by a colon (:). When the statements are separated by both an exclamation point and a colon (!:), Business Rules will list them to separate physical lines, even though they continue to belong to the same line number. Each portion of a line seperated by an !: is referred to as a sub-line.
00010 TOP: ! !: Print Newpage