A jump line is necessary when a story is interrupted by an ad. A jump line is not necessary when a story runs on consecutive pages. (clarified 1/21/15)
Place jump line “Continued on page XXX,” flush right, at the end of the text before the jump.
On the page on which the story resumes, “Continued from page XXX,” flush left, should precede the text.
Jump lines are italicized and capitalized, and do not end with a period.