What is a piperouter? How do i find it?

Hi guys
I recently used the lava effect that fusion has installed and i seem to notice that there was a little curved circle in the "flow view" and it had the name of piperouter
Is this a checkpoint to let you know that everything connects in the certain area, just so that you won't be lost?
Also, how do i find it? How do i put it?
Please help me
Thank you thank you so so much
I recently used the lava effect that fusion has installed and i seem to notice that there was a little curved circle in the "flow view" and it had the name of piperouter
Is this a checkpoint to let you know that everything connects in the certain area, just so that you won't be lost?
Also, how do i find it? How do i put it?
Please help me
Thank you thank you so so much
