History mode reset.

History mode reset by buttom or commands.

This is doable, will add to feature request list.

First draft implementation here:

It worked, but still zero for time, would have to leave zero only by command?

Set history time to max (9999), then history mode will reset only with an action.

It still has 30 seconds when it puts 9999.

Just noticed the same, pushing 1.6.4-beta2 soon, which has this fixed.

I can make an action for resseting history for a particular gauge, but
is there an opportunity to reset history for all gauges?

Currently you have to create individual actions to reset each gauge history mode. You can trigger them all with one trigger though.