On the Page Setup dialog box, click the Paper Size tab to set page size and orientation.
Use the Paper Size list box to choose the size of the current page. You can choose from standard page sizes or choose Custom Size and create your own by adjusting the Width and Height measurements. If you enter dimensions for Width and Height that do not match one of the standard page sizes, the Paper Size selection changes to Custom Size.
If you choose the Use Master Page option, the page matches the size, orientation, and page fill (if any) of the master page. To edit the master page, click the Page button (at the bottom left of the active window) and choose Master Page. (See the section "Using the Master Page" in this chapter for more information.)
The Page Orientation options determine the page layout. Select Portrait to layout the page so that the vertical dimension is longer than the horizontal dimension. Select Landscape to layout the page so that the horizontal dimension is longer than the vertical dimension.
Choose the Use Printable Area option to force the on-screen page to reflect your printer's page size and margins. For example, if your printer uses an 8.5" x 11" page with 1/2 inch margins, the on-screen page matches it.
The Width and Height boxes show the measurements for the current page size. You can create a custom page size by changing these settings. Click the arrows to change its setting.
The Units button shows the current page size measurement units. To change the units setting, click the Units button and choose the desired units.
Individual pages in your document can have different sizes, orientations, and page fills, if desired. To apply the same size, orientation, and page fill to all pages in the document, select Apply to All Pages. This option, like Use Master Page, forces all pages to be uniform.
Page Tiling shows the number of columns and rows of tiles used when the current page size is printed to the target printer. If the page size is set to use Printable Area and the Page Orientation matches the orientation of the target printer, no tiling is used, and the number for columns and rows are both set to 1.
If you enter new values for columns and rows, the page size changes to match. See the chapter "Printing Your Work" for an explanation of tiling. If you want to display tile lines on your screen as you work, open the View menu and choose Workspace, and then choose Show Printer Page Tiles from the Workspace submenu.