You can define how a means of conveyance should appear in the traffic tree. By default, the name of the carrier is displayed. If you want, you can display other information as well. For this purpose, use the MOC_label CIP function from the package m_pck_traffic_custom.
This function already contains some examples of possible labels to be displayed in the tree. For example, you can also display the name of the carrier plus the loading point or the invoice number or the carrier name plus the voyage/flight number.
You can further define the labeling of supplement nodes in the traffic tree by modifying the get_supp_label function. By default, a supplement node will be labeled according to the pattern 'Suppl <x> - <date>' where <x> denotes the consecutive number of the supplement (starting with 0) and <date> is the date on which the supplement has been created.