verticalSpace

                  The @verticalSpace attribute defines the amount of vertical space associated
                  with the line break. If the attribute is not present, no extra space between lines
                  is added. If the attribute is present, the value is the amount of space
                  to add to the position of the next line.  The value may specify units, using CSS
                  syntax (e.g. "4em" or "12pt"). If no units are given, the units are assumed to be
                  points.  The values "nextPage" and "nextColumn" are used to force a page break or
                  column break.