For some of the L ones it’s possible to access the H part. So it’s not just a byte (B) it’s the low (L) byte and there is a high (H, just the second byte of the

For some of the L ones it’s possible to access the H part. So it’s not just a byte (B) it’s the low (L) byte and there is a high (H, just the second byte of the word) you can also get to. For the high 8 registers it isn’t like that. There is no way to get to the “high” byte.