I used to think that it was the order in which the pipes were created but I've recently noticed that this isn't necessarily the case. It was just a coincidence based on what I observed.
Here's my new observations.
The first pipe connected to a structure will always be the first one listed. The order following the first one will be the order in which they were connected to the structure. These 2nd, 3rd, .. pipes can be reordered by disconnecting and reconnecting them in the intended order. The first pipe, even when disconnected and reconnected, will remain first .... until you disconnect all the pipes from the structure. Now, the first pipe that is reconnected to the structure becomes the new 'first' pipe.
.... this still isn't quite right. I cna disconnect the 2nd and 3rd pipe and reconnected them in the opposite order and the 4th pipe will remain the 4th pipe ..... the structure must be holding the 4th pipe as the 4th pipe and not moving it up to the 2nd pipe position when it opens up by disonnecting the other two. That must be it. The structure must be building a list of connected pipes in the order they were connected. When a pipe is disconnected, the spot in the list that the pipe occupied remains vacant until another pipe is connected to take it's place. Now a new pipe, 5th pipe, would fill the first vacant spot in the list, which would now be the last.
Ok, now the short version. Disconnect all the pipes from the common structure. Reconnect them in the desired order.
Message was edited by: MMccall
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