Environment settings in ArcMap 10.8

[Deepa]

Hi,

I work with ArcMap 10.8. I see there are environment setting under Geoprocessing, ArcToolbox and also within model builders. I normally set workspace, output coordinates, processing extent and raster analysis within the environments in model builders if i am using models. 

But i am still unsure what is the purpose of three environments and which one overwrite the other setting if given differently in three places?

Thank you!

[DanPatterson · Accepted solution]

The first is general settings, the arctoolbox ones are ones that apply to it, However, if you set environments for a tool or model, those take precedence since they are the last set