You have quite a bit of control when it comes to how text will appear on a printed page. A margin is the empty space between a document’s contents and the edges of the page. Docs’ default margins are 1 inch on each side of the page, but you can change the margins to accommodate the needs of your document.
Docs can lay out the page for any paper size that your computer’s printer supports. This means that you can use Docs not only to print letters, but also legal documents, postcards, tickets, flyers, and any other documents that use a non-standard paper size.
Click File on the menu bar.
Select Page setup.
Click the Paper size list arrow.
A list of common page sizes appears.
Select a paper size.
The document preview on the screen adjusts to use the selected paper size.