If I issue insights with period durations, can multiple insights run at the same time? I assume that an up insight issued before an up insight expires effectively extends the up period. What happens if I issue an insight for up the next 10 bars, and then 5 bars later, issue an insight for down for the next 10 bars? There would be a five bar overlap with both an up and down insight? Would the effective end result be up for 5 bars, flat for 5 bars and down for 5 bars? Is there a way to cancel in insight before the duration is finished?

If I issue an insight with no period, does the next insight issued automatically take the place of this insight? What if I issue an up insight with no period, and then issue an insight with an up period, does the orginial insight get replaced?