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Maurice
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The search along a tour found nothing. It asked the places index for all kinds of a stretch at once, above the 100 rows and 200 characters of terms the index takes, so the index refused and every stretch went to the public Overpass mirrors, which do not answer from this server. Now the index is asked in small circles strung along the line, one request per kind and circle within its limits, and an empty circle counts as an answer, so a city walk lists its sights, museums, parks, cafes, restaurants and markets in well under a second. The kinds the index does not know (viewpoints, huts, drinking water, toilets and the like) are asked of Overpass along the whole line at the same time, one query per stretch of up to 50 km, three at a time, each with a short deadline of its own; a line past 400 km is searched along its start and says so. When the index answers no circle at all, its kinds go to Overpass beside the others instead of after them. A kind no source could be searched for is named in a calm notice above the list instead of reporting nothing found, and the reason is written to the log. Unnamed taps, toilets, shelters, picnic spots, viewpoints, summits, slipways and repair stands stay in the list and on the map under the name of their kind; an unnamed garden, cafe or memorial is left out. The places nearest the line are kept when there are more than sixty, listed from the start, with the opening hours the source has. A walk's parks are parks and gardens only, and its museums are museums and galleries only, no longer the beaches, summits, theatres and cinemas of the map's explore buttons; a water park the index files under parks is not one of them. The index also answers markets and summits. The explore buttons keep their single request, and a search of several kinds that would exceed the index limits is asked one kind at a time instead of being refused. The MCP tool search_tour_pois and its wiki row describe the walk kinds and the new unavailable list, and the OVERPASS_TIMEOUT_MS row says the search along a tour keeps its own shorter deadline.