With this function the position numbers of all ducts parts of the opened drawing will be shown
and you are able change them.
Access to the command over
Commandline: _POSJUMP
Assistent: 
| Ventilation Service | 
| Search /Change position number
If a line from the listbox will be selected the corresponding duct part will be marked with
a red border on the screen. (see graphic)
Consecutive position numbers can also be changed.
