Panadapter status "capacity" "available"

At some point, we will have a situation where there are more things that you can do in the radio than it can handle at once.  One option for us would be to permanently choose one set of things you could do and allow no more.  Another option is to have a "cost" for each item and prevent you from going over the cost.  For example, you might want to do a multiple DV slices, but you might not be able to do this at the same time as 8 panadapters, etc.  This was the original intent of this mechanism to say how many units were available in the panadapter code and how many were used.  Today, it reports this, but does not restrict operation to "positive" available results.  I do think this will get implemented in the future as we add more, but for now you can ignore it.