Creating custom patterns from selections
You can convert a selection into a seamless custom pattern, which you can use for painting, adding text, or creating Web page backgrounds.
To create a custom pattern
2
Choose
Effects 
Image Effects Seamless Tiling.
The Seamless Tiling dialog box appears.
3
Choose an option from the
Tiling Method group box.
4
Choose an option from the
Direction group box.
If you choose
Bidirectional, you need to choose a setting from the
Corner Style group box.
5
Modify any of the settings in the
Settings group box.