Zh-hant:Overpass API/Overpass QL
這wiki頁面將會提供Overpass QL的完整技術參考文獻。要察看實用範例集合，請參照Overpass API by Examplewiki頁面。如果沒有技術背景你可以發現這一頁相當容易親近。
;。 Statements are executed sequentially by a , and each statement run changes the process's execution state.
The Overpass QL execution state consists of:
- the default set
_(a single underscore)
- other named sets, if created by the user
- a , during the execution of Overpass QL block statements