It was a pleasant surprise to find this
envelope security pattern of four-pointed diamond-shaped polygons.
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| Are 4 points a star? |
The repeating pattern itself is very small; repeated it grows massively.
Security
envelope patterns come in different patterns that . Usually, they are small
and tightly packed, covering the whole interior of the envelope to
obfuscate the contents.
That would make for a cool looking floor tiling.
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