Vertical alignment

When no additional content can be allocated to a page, TopLeaf will vertically align the allocated content within the page data area. Vertically aligning the page content involves redistributing the unallocated vertical space in order to position the content at the top, bottom, or middle of the page. By default, content is aligned to the top of the page data area. Alternatively, when the amount of unallocated vertical space is less than a specified threshold, Topleaf can vertically spread that content by redistributing the unallocated space between page segments, paragraphs, or individual lines.

The vertical alignment mode is set from a start or end tag mapping that forces a page or leaf break.