Copyright 2000, Jim Loy When responding to a relay, responder may answer that ask and the next ask, by bidding higher than what is apparently possible. This process is called Zoom. We zoom by answering this ask and the next, simultaneously.
Zoom saves bidding space, and is vital to all relay systems.
Let's look at a slightly more complicated example. With the above table, relayer may sign off cheaply after the min response. We save bidding space, all around. After the min response, relayer may decide to continue relaying, and ask where the shortage is. But it shows Zoom in the last two rows of the table.