Question - Location Aware Contexts
 

How does one define 'location' as far as contexts go?

For example I could have a very specific context of 'at home' which would be just a few square meters, but equally I could have an 'in town' context where the location would be quite large.

Is there any support for 'area' or 'within 'x' distance of location'?

Further, something like 'errands' might imply 'not at home'. Could that maybe be an option?