Assigning a Tool to the Core Vocabulary
Video (Click play button to start.)
Use the ASSIGN CORE KEYS menu to assign a Tool to any Core vocabulary key. Use the ASSIGN ACTIVITY KEYS menu to assign a Tool to the Activity Row.
When you assign a Tool to a Core vocabulary key, the Tool replaces the icon that was associated with the key. If you activate the key, it will perform the duties of the Tool you assigned to it.
When you assign a Tool to a key, you can no longer use that key as part of an icon sequence for a message.
To Assign a Tool to a Core Vocabulary Key:
1. Go to the Toolbox. Activate the ASSIGN CORE KEYS MENU. 
2. Activate the key on your overlay where you want to assign the Tool.
3. Activate TOOL in the Assign Key As box .
4. Activate the Enter Assignment key .
5. Activate INSERT TOOL on the Spelling overlay .
6. Now you see the All Tools List. Select the Tool you want to assign to the key. We selected Clear Display as an example.
7. You return to the Spelling keyboard.
8. Activate OK.
9. You return to the ASSIGN CORE KEY MENU.
If you want to change the label, you can do it now. If you want a blank label, type a space
instead of a word. If you want to add an icon to remind you of the Tool stored there, you can do so now.