what is the requirement to install a jump device in single player?

[AeternusDoleo]

Discovery does, but the serverside plugins (FLHook) do not, which jump and playerbases are a part of. What you could do is run FLServer.exe on your computer, and then connect to the multiplayer game running at IP 127.0.0.1 (which is the internet loopback address, meaning connecting to it will ask your machine to connect to itself).

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Wide awake in a world that sleeps, enduring thoughts, enduring scenes. The knowledge of what is yet to come.
From a time when all seems lost, from a dead man to a world, without restraint, unafraid and free.

Mostly retired Discovery member. May still visit from time to time.