When creating a drawing, it's important to design with a particular paper size and orientation in mind. You can use either of the following procedures to specify these settings.
With nothing selected on the drawing page, choose the Pick Tool from the toolbox.
On the Property Bar, click the down arrow beside the Paper Type/Size drop-down list and choose a paper (Figure 8.1).
The chosen paper's dimensions are displayed in the Width and Height ...
Figure 8.1. You can set page size and orientation for a document by choosing options from the property bar.