Overprint Preview simulates printing result of the overprints you've set, So that you can be confident your final result comes as close to your expectations as possible — BEFORE sending it to print.
Після закінчення вашого документа, go to the “View” menu, then select “Overprint Preview”. Ви можете кинути опцію на і off,just to see if there eny elements that not going to print correctly.
So, “what is overprint?” Simply put, overprint is коли кольори є printed directly over ether others which causa mixing of colors. Це змішування кольорів результатів в різних кольорах. Для прикладу, якщо білий ink is set to overprint on top of the cyan print, the overlap would create green.