[merlincorey]

> I can never remember whether /x means "the last x bits are 0" or "the first x bits are 1"

> People should write 80/48 or 48/80 to be clear

The clarity is found implied in your preferred example.

- "80/" would mean "80 bits before"

- "/48" would mean "48 bits after"

[dheera]

... and this is the opposite of the other 2 responses