On 16/02/2015, Martin Koppenhoefer <dieterdre...@gmail.com> wrote:
> 2015-02-16 10:42 GMT+01:00 Martin Vonwald <imagic....@gmail.com>:
>> * maxwidth: this is a legal limitation; nothing wider than the given
>>   value may use the feature
>
> +1, there is also the synonym "maxwidth:legal" (IMHO not advisable, as this
> is the same than the more used "maxwidth")

That's what the maxwidth wiki page states, but it is strangely
inconsistent with maxheight. It really should be the same definition
for both, and I think the height variant makes more sense.

maxfoo = min(maxfoo:physical, maxfoo:legal)

Don't assume that legal =< physical. For example, many roads have a
default legal max but didn't bother setting a legal limit on
individual chokepoints. When physical != legal, you may want to add
the subkeyed tag for the bigger value (or both), but most data users
will only care about the simple key.

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