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= Tools > Join overlapping Areas =

[[Image(source:/trunk/images/joinareas.svg,48,middle)]] ''Keyboard shortcut:'' '''{{{Shift+J}}}'''

'''Join areas that overlapping each other.'''

You can select two or more [wikitr:/Help/Concepts/Object#ClosedWays closed ways].
* If one way is surrounded by the other(s) a multipolygon will be created  automatically.
* Usually, all [wikitr:/Help/Concepts/Object#Tags1 tags] with only a single value and all relation memberships from all ways will be added and the [wikitr:/Help/Action/CombineWay#TagsMembershipsConflictDialog Tags/Memberships Conflict Dialog] will open if manual decisions are needed. In normal user mode it will additionally warn before adding any tag or membership the ways do not have in common, like Combine Ways, see [wikitr:/Help/Action/CombineWay#CombineConfirmation Combine Confirmation].

== Usage with buildings ==
[[Image(buildings-joinoverlappingareas.gif)]]

== See also ==
* [[Image(source:/trunk/images/combineway.svg,middle)]] [wikitr:/Help/Action/CombineWay Combine Way]


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