You can create an unlimited array of custom patterns for backgrounds, borders and to fill text. The drop down color and pattern menu from the Fill Color and Background Color buttons in the Text toolbar offers all the choices of the Color menu as well as additional choices for choosing and creating patterns. To create a custom pattern, select Create / Edit pattern... in the color and pattern menu.

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Once you have selected a pattern, you can select Choose / Adjust pattern... to adjust the scale of the pattern, rotate the pattern or recolor the pattern. You can adjust custom patterns that you created as well. Create the pattern, click OK to apply the pattern, then select Choose / Adjust pattern... from the color menu to adjust the scale or rotate your custom pattern.