PreSonus is shipping Notion 5, a major upgrade to its popular notation software. This new version makes it easier than ever to write your ideas quickly and includes a new video window, new effects from PreSonus Studio One, an enhanced chord library, a custom rules editor, and many notation and publishing improvements. Notion is the only notation editor that supports Mac, Windows, and iPad and the only one that can run 64-bit on both Mac and Windows.