The HIGHLIGHT clause causes the screen item to appear in high intensity mode when it appears on the screen.
- This clause is valid for input, output, update and literal fields.
- If the HIGHLIGHT clause is specified at group level, it applies to all suitable subordinate elementary items.
- If the FOREGROUND-COLOR clause is also specified, the HIGHLIGHT clause causes the foreground colors to become brighter and
lighter; for example on some hardware, black can become grey and brown can become yellow. However, this does not apply to
the BLANK SCREEN clause.