This function deletes unnecessary intermediate nodes along straight pipe section without branches, tees, restraints, etc and single independent nodes (not connected to any piping).
Figure 1 shows a piping model with 3 unnecessary nodes: 247 and 6.
Fig. 1
To delete only node 6, open the "Delete empty nodes" window (fig. 2).
Fig. 2
By default, all empty nodes are displayed. To remove a node, select it and press "-". Figure 3 shows the list with node 247 removed.
Fig. 3
Then press "OK". Node 6 will be deleted from the model (fig. 4).
Fig. 4
Service > Delete empty nodes