Thanks to all. Through the last two comments posted I've come to see that Byteball has 2 currencies i.e Bytes and Blackbytes. Prior I was thinking of a byte as a numbered unit and not as a currency.
"Already now, bound payments allow you to P2P exchange bytes (the native currency of Byteball) against blackbytes (a private untraceable currency on Byteball platform) or any other asset issued on Byteball."
Q. Looking at the notes associated with the 7th round offer, there is a split with what you can get in either bytes or Blackbytes. So, you just let Byteball know which you would prefer or do you just convert the one you get over to the other without cost?
You receive both Bytes and Blackbytes. You receive 2.1111 more Blackbytes then Bytes, as written on the first page.
The snapshots of Bitcoin blockchain and Byteball DAG for the 7th round will be taken on the Full Moon of July, on July 9, 2017 at 04:07 UTC. What you receive, is proportional to your balances in BTC and Bytes:
BTC to bytes: 1 BTC of proven balance gives you 62.5 MB (0.0625 GB)
BTC to blackbytes: 1 BTC of proven balance gives you 2.1111 * 62.5 million blackbytes (money supply of blackbytes is 2.1111 times more than that of bytes)
Bytes to bytes: 1 byte on any Byteball address gives you 0.2 new bytes
Bytes to blackbytes: 1 byte on linked Byteball address gives you 0.42222 blackbytes
Putting this another way, to receive 1 GB from the distribution, you need to already hold 16 BTC or 5 GB. These same holdings also give you 2.1111 GBB (giga-blackbyte).