Call Register
The title of the window indicates which input is expected. Pressing
CANCEL 
aborts the addition of a new entry.
Key mapping:
Changes input mode to capital letters. Changes input mode to small letters. Changes input mode to numbers.
Deletes the character to the left of the cursor.
Moves the cursor to the left.
Moves the cursor to the right.
Accepts the entry.
ENTER
Cancels the entry.
CANCEL
Editing an entry
After pressing the edit key 
on the entry to be modified, the name and phone number will be brought up in sequence. Confirm each item
by pressing ENTER 
.
The title of the window indicates which input is expected. 
ENTER
accepts the data, CANCEL 
aborts the editing.
Key mapping:
Changes input mode to capital letters. Changes input mode to small letters. Changes input mode to numbers.
Deletes the character to the left of the cursor.
Moves the cursor to the left.
Moves the cursor to the right.
Accepts the entry.
ENTER
Aborts the editing process.
CANCEL
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