Poorly phrased. It can take multiple bytes to fully define one codepoint, but the encoding is defined in terms of a stream of single bytes. In other words, each

Poorly phrased. It can take multiple bytes to fully define one codepoint, but the encoding is defined in terms of a stream of single bytes. In other words, each unit is one byte, hence flipping each unit gives back the same unit. This is not the case for UTF-16 and UTF-32.