All empty pipe sections that run over the pipes in this location are listed for each pipe, i.e. the sections that do not end in the location also appear twice, once in the incoming pipe and once in the outgoing pipe.

If "Structure" is activated, the pipes that are not used in a line are also displayed.

symbols

Pipe to the left of the symbol is used in line and connected there with pipe to the right of the symbol.

Pipe is not in stretch and ends here

Pipe has a different end location than the top pipe in which it is located.