PortsForGUIs
This parameter is evaluated by the tree manager and specifies the number of messages boxes and/or the IP port numbers, the tree manager opens for the GUIs. For each GUI which wants to connect, you must have a message box. Attention: though the parameter name contains a "ports", you must specify this value, even if you do not use TCP/IP at all. This is necessary, because the tree manager deduces the number of needed message boxes from the specified range. The format is: "[minimum port number]-[maximum port number]". The example: "9960-9961" opens two message boxes. Maximum number of GUIs is 25 (since build 5.4.2084.0, prior to that it was only 10).
Possible values:
Default value: 9960-9960