In the encoding examples, I would prefer showing ASCII characters that encode themselves as literals. So for the "hello" (format B) example, which is currently shown as:

    55 68 65 6C 6C 6F

it would make sense to me to display it as something like:

    <55> h e l l o

or

    55 <h> <e> <l> <l> <o>

depending on which version you prefer.