When ClickToUpdate is active, the Key to use for entering the screen to display the update screen. When the user clicks on the field, the cursor will be moved to the ClickFocusField and optionally, depending on the ClickToUpdate value, the ClickToUpdateValue text will be set into the field.
Once the cursor and optional data have been set into the ClickFocusField, this key is sent.
Default: "[enter]"
