You won't be able to dismiss this by usual means (escape or click button), but you can close it programatically based on user choices or actions.
"This product was great! I asked my designer to make these enclosure cards match the colors of the rest of my invitation and they came out perfectly! They come in these cute little plastic boxes and kind of remind me of little trading cards. My only concern with these, once I tried placing them in my invitation envelopes, was how to ensure that they would be seen by my guests (my fear was that they might slip down into the corner of the invitation envelope and not be noticed). I ended up using those little double sided tape pieces that scrapbooker use, to tape the enclosure card onto the Reply card. It actually looked really cute, and guaranteed it would be seen."
"We really needed to give our guests more information about our reception, so we chose this card and changed the wording up a bit. It is now a great little info card! WPD was wonderful at helping me with the wording. They pointed out any typos and suggested some word changes so that the card was more uniform with our invitations. I couldn't be happier!"
"Everything, including color and font was exactly as I wanted and ordered. Nothing was brighter/duller than the images on the company site. Highly recommended."
"These turned out perfect. They had all my information printed precisely how I asked. Great high quality card stock. Very pleased!"
"These turned out excellent. Wish I would have thought to get another set and have hotel/registry information on instead of trying to print them out myself after the fact."