module configuration: forecast days

[lhsans]

Hello,

First thing first, this is a great integration for HA! many thanks to the developper(s).

I was wondering about the "forecast days" option in the module (PyETO) configuration. The docs state:
Forecast days: How many forecast days taken into account. This is useful to avoid irrigating if the forecast suggests it will rain.

Does this mean that only forecasted rain is taken into account (ie. added to the bucket) or does the forecast also take (forecasted) Et into account.

(for context, my usecase: irrigation 2x per week (or when bucket < -25mm), maxbucket 30mm. I add some extra mm (calculated back to zone duration) to the bucket when I start the irrigation. So after watering my bucket is not 0 but +10 for example. I use this to "survive" 2-3days without irrigation, mainly usefull in summer. If the "forecast days" includes future Et values, then I should not be adding to the bucket :) )

Thanks