sent from a phone
> On 1 Dec 2016, at 10:42, Colin Smale <colin.sm...@xs4all.nl> wrote:
> What would this "visibility" tag *actually* be used for? Choosing the right
> size of icon on a map? Navigation hints for pilots? Choosing where to stand
> for the best view?
it could help deciding what to show when. For things, e.g. advertisement, it is
a possible way of classification
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