# Most-Significant-First Bit Traversal This type orders the bits in an element with the most significant bit first and the least significant bit last, in contiguous order across the element. The guide has [a chapter][0] with more detailed information on the memory representation this produces. This type likely matches the ordering of bits you would expect to see in a debugger, but has worse codegen than `Lsb0`, and is not encouraged if you are not doing direct memory inspection. [0]: https://bitvecto-rs.github.io/bitvec/memory-representation