You can print a large format document, such as a poster or banner, by splitting the page across multiple sheets of paper (called "tiling"). The tiling option calculates how many sheets of paper are needed. You can adjust the size of the original to best fit the paper and specify how much each "tile" overlaps. You can then piece together the tiles.
Adobe Reader 9 or earlier: Adobe Reader 9 or earlier do not offer the tiling option.