Samsung SPH-I500 Online User's Manual page 111

Numbers
Writing numbers is done the exact same way as letters. Simply use the
numeric or right side of the Graffiti writing area. Numbers also have a
starting point, similar to the letters.
Here is a chart of how to write Graffiti numbers:
Writing Punctuation Marks
Any standard punctuation mark available on a keyboard can be created
using Graffiti writing.
All punctuation marks begin with a single tap in the Graffiti alpha
writing area. This tap activates the punctuation shift, indicated by a dot
on the display screen. The next stroke is designed to create a punctuation
mark. When the punctuation stroke is active, the character can be written
on either side of the Graffiti area.
2K: Entering Information into the Handheld Computer 108
Section 2: Understanding Your Phone