Enter the Prefix of the spot color name.
You can enter alphabetic characters, numbers, or symbols (excluding "\", "Tab", ":", ";", ",", "~", """, "’", "?", "<", ">", and "|").
A single-byte space is also available. A single-byte space can also be entered at the end.
Up to 31 single-byte or double-byte characters can be entered.
Matching with the spot color name in image data is performed with "Prefix + Color name".