Yes entire radio net is moving through the shared pad together - so you when you send you consume a bit of the pad, and when someone sends to you they use the n

Yes entire radio net is moving through the shared pad together - so you when you send you consume a bit of the pad, and when someone sends to you they use the next bit of the pad, then you use the next, etc. A new row per message means you don't re-use between messages (message is something like a sentence). Each message should be short enough that you don't re-use (a 22-symbol message is already crazy), and you are not allowed to re-use if that means re-using a target symbol, but yes you might slightly re-use within messages if you're being sloppy. In reality you don't get through the pad very quickly due to the 'compression' of a dictionary for typical parts of messages. (This is all public info, not disclosing anything here.)