Alphasmart NEO User Manual page 127

shows a sample user dictionary. You can separate words in a text file
with spaces, commas, tabs, or carriage returns.
SpiffyPro
Oban
Turlock
Cumbria
Bena
Caden
Ipswitch
Cupertino
Islay
MegaSync
Aptos
Surrey
There can be only one custom user dictionary on an AlphaSmart
device. If you want to make changes to the user dictionary—
additions or deletions—it's best to make the change in the word list
file on your computer and resend it to your Neo. Consequently, it's a
good idea to keep the user dictionary on your computer so that you
can make changes to it as you need to. When you send a new list to
your Neo, it overwrites the existing user dictionary on the device.
You can delete a user dictionary from the Spell Check settings either
in AlphaSmart Manager or in Control Panel on your Neo.
Working with AlphaSmart Manager
Sending a user dictionary to Neo
A custom word list for a user
dictionary; the words are
separated by carriage returns
in this example
119