OnePager has always been able to support output of pages of various sizes. Version 5.1 of OnePager makes selection of your page size easier with the Page Layout tab on the ribbon:
OnePager 5.1 automatically gets your list of available page sizes from Windows and provides them in the convenient dropdown. Simply click on the Page Size button and select your page size.
When you are ready to print your project view you have two options for accessing a Print Preview: on the Page Layout tab, or by selecting the Print option from the File tab. Within the File tab, you have another opportunity to change the page size by clicking on the Settings button:
At this point you may make changes within the Project View Properties form’s Page Layout tab, or simply accept the Page Layout settings by clicking OK, and then click the Print key above to produce a printed copy of your project view.
OnePager handles all the scaling and positioning of the project view on the page. Look for more blog posts in this space on how to configure the time axes, rows and swimlanes, titles, headers, and footers on multiple pages, a single page, or selected pages.