Recovered from the browser cache of: Redgreen
The author writes:
There is only one purpose for the existence of Comments on a Postcard.
I will now demonstrate the making of a strip.
Move to the upper-left corner of the white image!
Green sphere! Blue cube! Red pyramid!
Enter the grey paper!
Fold your upper-right corner and remove your lower-right corner!
Behold! This picture is what you have seen on all the Postcard strips this whole time!