Uniform regions (solid backgrounds, smooth gradients) get stored as large blocks. Detailed regions (edges, textures) get subdivided into smaller blocks. You end up with a compressed representation that preserves detail where it exists and simplifies where it can.
那么，这场席卷全网的“过期糖”风潮，究竟是如何形成的？又为何能让如此多人上头？
。服务器推荐对此有专业解读
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How to reproduce
still around, although declining in use, in the 1970s. The 3612 had a slot on