Users' diaries

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Local Chapter Congress Notes from SotM 2016

Posted by mikelmaron on 17 April 2017 in English (English)

The sun shined on the Local Chapter Congress at State of the Map 2016. It was fantastic to hear from so many people from so many communities.

Yes, sorry, it is long overdue to share -- shortly after SotM, I took leave after the birth of my son, and only finding space to pick this up with the upcoming Board Face to Face.

There were many solid ideas, and of course further discussion. Would love to find several avenues to explore these. I think one could be the Advisory Board, which will include representatives from official Local Chapters. For "incubating" local chapters, maybe we discuss ideas on the local chapters mailing list. For communication ideas, we should figure out the right place...

Dorothea took thorough notes from the session. Posting the summary below.

Organising local communities

How OSMF Could Help?

  • Add new "tier" to Local Chapters for semi-formal groups not ready to register as a formal organization or full Local Chapter status
  • Subsidize some costs of groups in poor communities, including support for accessing internet and computer equipment

For OSMF membership

  • 2-level tier for membership fee, to include mappers from poorer countries
  • Vetting of members at lower membership fee by local chapter

Other fundraising options for local groups:

  • Ask local companies
  • Mapathons at places (like bars / coffee shops) which donate percentage of the proceeds
  • On membership signup, option to donate additional amounts


  • Restart equipment (GPS / phones / laser distance devices) lending program, either from OSMF, or between local communities
  • Legal questions on OSM activities in places like Pakistan
  • Groups as part of larger organisations
  • Organize national level donation collection through non profit associations for tax benefit, then donate to support OSMF

Improving communications

  • Central OSM-supplied platform for social aspects, there is fragmentation between communication tools (lists, some people find IRC/forum unappealing, FB, etc) ** The platform should also be helpful for organisation purposes (i.e easy past message retrieval)
  • Creation of map that has local groups with contact details on it
  • Tickbox on sign-up page to accept push-notifications
  • Short video (maybe localised) before the first tutorial in iD, that explains what OSM is all about
  • Identifying & contacting new mappers as they join -- Belgium and Switzerland have models
  • Build tool to contact new mappers. The welcoming message will, ideally ** be personalised ** push people to come into contact with local groups ** let them know options available ** mention local upcoming events ** also, it will be followed-up after a few weeks/month (people have limited time)

  • Possible revitalisation of Welcome WG

  • Friendly reminders to decrease duration of mapping inactivity

Additional suggestions

  • Gamification
  • Drop-down list with current news (national/regional) on

Pokémon™ Go event rant

Posted by AkuAnakTimur on 17 April 2017 in English (English)

OK, a week of Easter special.

More new Pokémon mappers, [edited] and more map data which is quite, err, not that quite above par. Well...

Street Art, Gedling

Posted by alexkemp on 16 April 2017 in English (English)

It has been a mighty long time since I documented some Street Art (the last was some Lions in Gedling, Gedling's obsession with stick-men, then in Wollaton Avenue but the main last entry was back in November).

This first is Gedling's variation on Nottingham’s Plaster Boys ‘n’ Girls:–

Gedling’s Plaster Boys ‘n’ Girls

(that variation appears to be positioning them on the street such that motorists get a sporting chance to mow the actual schoolchildren down, and only then are presented with a line of Plaster Children to warn them not to do so) (the school entrance is behind the photographer & in front of these school_sentrys)

See also:–


Next is a house-elf (at his feet are rescued cobbles from a Nottingham street):–

house-elf, yew tree lane

Location: Arnold and Carlton, Gedling, Nottinghamshire, East Midlands, England, United Kingdom

Numérotation des rues

Posted by ralphi1475 on 16 April 2017 in French (Français)

Bonjour à tous, j'utilise le site du cadaste belge pour numéroter correctement les bâtiments et entrer les adresses. ;) par ici

Location: Rue de la Gare, Lierneux, Verviers, Liège, Wallonie, 4990, Belgique

Gedling Access Road (GAR)

Posted by alexkemp on 15 April 2017 in English (English)

I've just uploaded some changes to this proposed road (I've also made it an associatedStreet Relation so that all the various connecting roads + roundabout(s) can be viewed):–

Gedling Access Road (GAR)

See also:–

The map provided from the council shows it passing through the middle of some Retention Lagoons (I certainly hope not - our route misses them).

No GIS is available (that I know of) so I've used a combo of what appears to be a detailed, accurate (but tiny) map & a much larger, and out-of-date, inaccurate map to hand-draw as accurate a route as I can manage.

The planned Gedling Access Road (GAR) is a 3.8km road which will run from Mapperley Plains to the A612 at the Burton Road/Nottingham Road and Trent Valley Way junction.

Planning permission for the road was approved in December 2014. Construction works for the road is due to start in (Spring) 2017 with completion set for (Spring) 2019.

Location: Gedling, Nottinghamshire, East Midlands, England, United Kingdom

Der Erd-Umradler Klaus Max Smolka alias "LemLem" nutzt OSM für die Feinplanung

Posted by -karlos- on 15 April 2017 in German (Deutsch)

Laut seinem Blog-Beitrag "Friends de Tour" nutzt er neben Papierkarten OSM für den Feinabgleich und findet manches auch nur bei OSM - Siehe auch: "Landkarte oder GPS?" -

Location: Yeniköy, F.S.M Mahallesi, Sarıyer, İstanbul, Marmararegion, Türkei

Extension of Magtymguly Avenue westward to Koshi

Posted by apm-wa on 15 April 2017 in English (English)

The extension of Magtymguly şaýoly west to the traffic circle on Köşi köçesi has been opened so I collected GPS traces today, tweaked the path of the street under construction, and removed the construction=yes tag. Ann held the iPhone to collect OpenStreetCam data, which allowed us to add bus stops on the new section of street and verify location of traffic lights (stoplights) and intersections.

Location: Kosi, Ashgabat, Ahal Region, Turkmenistan

Gedling Wood Farm

Posted by alexkemp on 14 April 2017 in English (English)

Yet another first:– the first working farm that I've mapped (other, non-working, farms in Gedling have been Manor Farm Arnold Lane, Glebe Farm Lambley Lane, Phoenix Farm Arnold Lane 1, Phoenix Farm Arnold Lane 2 & Scot Grave Farm Arnold Road). You can find Gedling Wood Farm farmyard & fields here:

The farmer was enormously helpful; she made a photocopy of the field layout for me and named every field. In return I've spent an hour moving the existing landuse=farmland out of the way & have entered the first 6 fields on to the map. I like the way that they are rendered on the standard map; much more subtle than drawing the hedges in.

I've got one difficult decision to make. Ordnance Survey have two “Gedling Wood” on the map, which OSM have duplicated + added a third:– [1] is to the north & larger; [2] is invented; [3] is close to the farmhouse & smaller. The farmer named the field containing the smaller wood as “Little Wood”. I've got a suspicion that the farmer will know the names of the fields & woods better than the OS do, so am tempted to rename it (and remove the invented wood). Still, that is for tomorrow.

This is the farmhouse; it is ever so much older than you think (1600s - she named some feature about the windows as being an example of that period, but I could not retain it; naturally, the farmhouse also has a well):–

Gedling Wood Farmhouse


I've added all the farmer's names for the fields, and used hers' in preference to the OS duplicated names.

The farmer had an old embroidery on the mantelpiece which, when she gave me the photocopy, I realised was of those fields. It allowed me to realise the powerful sentiment that the family had for their plots. You only need to think about it a little to realise that those fields are the Farm, and are not just their livelihood but also their life.


This is the name of a street in nearby Lambley as well as the northernmost-field on the Gedling Wood Farm. I could not find the name in my Concise Oxford dictionary, but it turns out to be a typical East Midlands word:–


An East Midlands dialect word meaning a wooded valley ... a belt of trees along the bed of a small stream

...which is precisely what happens in this case (an unnamed stream which flows through Burton Joyce & eventually drains into the River Trent).

Location: Gedling Wood Farm, Arnold and Carlton, Gedling, Nottinghamshire, East Midlands, England, United Kingdom

Mapa de Italia para GPS Garmin Nuvi

Posted by brunoromiti on 14 April 2017 in Spanish (Español)

Buenos dias, estoy necesitando bajar un mapa de italia para mi GPS Garmin Nuvi250, alguien me puede ayudar? Gracias, bruno

Harvey's Plantation

Posted by alexkemp on 13 April 2017 in English (English)

It's not often that I get the chance to enter something utterly new onto the Map, so please forgive me if I crow a little about this one. However, it will not be very loudly since, although I'm most certainly not an arboriculturist, IMO this copse of trees should be levelled to the ground, burnt to ashes & started again from scratch.

IANAA makes a pleasant change to IANAL, does it not?

Harvey's Plantation
A circular copse of trees; close to though unconnected with local buildings, it stands amidst farmland and, whilst a couple of hedges and a small stand of trees connect, it is alone. On the ground, local trackways appear to get close, though none connect directly & few are officially mapped. Gedling Council have stated in connection with a Preservation Order on the copse (below) that “…the woodland had been a local landmark for over 100 years and makes an important contribution to the landscape.”

This is a distant view from the North-East (the copse starts at the break in the tree-line at the left):–

Harvey's Plantation 1

Owners:– Langridge Homes. The origin & history is unknown. The Gedling Access Road will pass close by to the north. The entire copse is subject to Tree Preservation Order No. 107 (pdf) (confirmed & served 2 March 2009 (pdf)), even though the NCC Senior Forestry Officer observed that “the woodland is showing signs of senescing with dead trees observed”. That latter sentence is clearly true with this closer view from the East, and even more obvious with the insect-ravaged hulk pictured below that:–

Harvey's Plantation 2Harvey's Plantation 3

The Plantation is in desperate need of maintenance. The floor is littered with fallen trees & ivy is running rampant. I may well have been subject to wrongful mental jitters, but I could not stay inside, it was too distressing (the local historian on Jessop's Lane told me that old_name=Hanging Lane, and that those condemned to die would be walked up the Lane to the gallows, stopping at the oldest house I've mapped so far en route; those gallows, of course, would have been positioned somewhere close to Harvey's Plantation).

17th Century Gallows

Walking home down Yew Tree Lane today (Sunday 16 April) on my way home after completing a survey on that Lane, and it affords a clear view of the hills. I realised for the first time that Harvey's Plantation sits on the crown of the highest local hill above all the houses beyond Jessops Lane (Hanging Lane). In that moment I realised that, if the 17th Century Gallows was positioned on the hills beyond the houses, then it would be positioned on (and not close to) the current location of Harvey's Plantation.

This next photo incidentally shows that view (the Plantation is dead ahead):–

Harvey's Plantation 4

Location: Arnold and Carlton, Gedling, Nottinghamshire, East Midlands, England, United Kingdom

Public Footpaths & Drovers Roads

Posted by alexkemp on 12 April 2017 in English (English)

My first discovery of a drovers' road was last February (see also a terrific description by one of the History Girls). I think that I've just found another one in Gedling, plus an odd trackway nearby, plus a vast long Public Footpath, and a circular Plantation, all of which are most odd. However, one thing at a time, and for this diary entry it is to be the Public Footpath and a (possibly) unmarked Drovers Road.

The drovers' road in Ware showed that, typically, Drovers Roads are marked as Public Byways on local signs. There is no such signpost for this one, which is why I keep using the words “if” & “possibly”. The field at the start of a very long Public Footpath [1+2+3+4+5] is most odd & when I saw it I went “THAT'S A DROVERS' ROAD!!!”. See what you think:–

a drovers' road?

The original mapper was perplexed by what he saw & put in a fixme within the area (now removed):–

  • “not sure of the tagging here - basically it's just full of thistles and not crops”

Unfortunately he also used landuse=scrub (a common tagging mistake, it should be natural=scrub) but that is also wrong (‘Uncultivated land covered with bushes or stunted trees’), so I've changed it to natural=grassland which is probably the closest that we can get. At least it will all show correctly now within the other farmland.

This was one of those occasions where my spider senses started going bananas. That Public Footpath travels all the way from Lambley in the north entirely through farmland almost due south to a kissing-gate that opens at the top of a narrow gap between two bungalows on Almond Walk (no signpost, no warning of any kind):–

the start of a journey

I did not walk the entire length of the footpath on this occasion — just to the top of the drover's road — but the feeling of age & thousands of other feet treading that route is unmistakable (the Parish Boundary follows the footpath for some distance, which is another sign of age). It doesn't even stop at Almond Walk. Directly south of the base of the footpath is a length of Yew Tree Lane and yet another footpath & another leading to Waterhouse Lane going south to Shearing Hill & Gedling Village centre, or to yet more footpaths leading in other directions.

It's true what Tolkein said:– stepping outside of your house is a dangerous business; your feet could lead you almost anywhere.


Gedling Access Road

The infamous GAR first turned up in these Diary notes in March 2017 IIRC. It sits heavy on the thoughts of many Gedling citizens, rather like that famous erotic painting The Nightmare. Shearing Hill, Arnold Lane & other central Gedling streets are undeniably thronged with heavy traffic, and the GAR is the latest proposal to relieve that traffic & thus to allow development to begin within a large number of other nearby areas (work on the GAR is due to begin this summer). In the process, vast swathes of housing are blighted and unable to sell their homes for decades, frozen in a perfect synonym of sleep paralysis.

The GAR passes directly above (north) of all of the housing that I've recently been mapping and specifically directly through the middle of today's footpath (just a little above the mysterious field).

the Nightmare

Location: Arnold and Carlton, Gedling, Nottinghamshire, East Midlands, England, United Kingdom


Posted by GugaMap1248 on 12 April 2017 in Brazilian Portuguese (Português do Brasil)

Olá amigos do OSM! Venho aqui anunciar minha volta ao OSM, recentemente estive inativo devido a ocupações pessoais e não-pessoais, mas, bem, estou de volta e estes são meus planos daqui para a frente: *Mapeamento completo da cidade de Sombrio *Mapeamento completo da cidade de Santa Rosa do Sul *Mapeamento de Sucupira do Riachão *Melhoras em diversas cidades do Brasil

Bem, todos estão convidados a ajudar, Att Gustavo

Mein Track aufzeichnen

Posted by Pitbull1964 on 12 April 2017 in German (Deutsch)

Hallo,wie zeichne ich meinen Track auf und wie ruf ich ihn ab ?

Location: Fleckerweg, Stainz, Deutschlandsberg, Steiermark, 8510, Österreich

[TBCL]OSM activities in Japan, April 2017

Posted by muramototomoya on 12 April 2017 in Japanese (日本語)

Missing Maps Mapathons as a recruiting instrument

Posted by joost schouppe on 12 April 2017 in English (English)

Over the passed year, the Belgian community was involved in organizing 10 mapathons. It is an incredibly easy thing to do, once you have the documentation in order. And once you realize you should do as little as possible - just find people who have a location and a recruiting network.

Some time ago, Pascal Neis wrote an article about new mappers recruited through classic channels, and humanitarian mapping. I asked and got a changeset dump of all the people who participated in our mapathons.

Here's some stats about that.

Overal, 1925 unique mappers participated in our mapathons, of which 328 were new mappers.

First, did we manage to turn them into returning mappers? Well... As could have been predicted by Pascal's depressing numbers: not really. The data used was from December 2016. You can clearly see that the percentage having more than one mapping day drops as we approach December. That simply means you need to wait a bit before you can do a decent analysis.


Say we give people 3 months, then we only look at the edits from September and before. We got 23% percent of people to map more than once! 10% mapped 3 days or more. Unfortunately, that's even slightly worse than the international average. Maybe we just worked for a more difficult audience :)

We usually tell people to map something in their own neighborhood before starting on the mission. Less than 21 of them did so. And in fact, only 4 of the 328 have more than one Belgian mapping day. As a comparison, we had 2059 people mapping for the first time in Belgium in 2016.

Even if that all sounds thoroughly depressing, it should be noted that organizing mapathons still is a great way to build a community, even if it doesn't show in these numbers. The mapathon movement was crucial in turning mappers into organizing volunteers. Especially the two interuniversity mapathons (with 200 participants last year and over 300 this year) are momentum-building moments. For the State of the Map in Brussels, we somehow managed to recruit 20 Belgian mappers to help out. That would have been impossible without the mapathons.

Apart from that, the constant confrontation with people who don't have any idea about OpenStreetMap, is a stark reminder that we should all keep up the missionary work.

Market shares of editors

Posted by joost schouppe on 12 April 2017 in English (English)

This wiki page has a nice collection of stats on editor popularity. The data is up to date, but the graphs aren't. I'm not a big fan of the logarithmic scale either.

So here's one graph to tell the main story.

I focused on "the big editors" to keep the graph simple. If you want more detail, just head over to the wiki page.

You can read the graph horizontally, showing first the distribution of changesets, then number of unique contributors, then total edits. On the left, market share. On the right absolute numbers.

Graph full size

There's some very clear patterns there. I really like how you can connect the dots for contributors of the "default editor" at the time: first Potlatch, then Potlatch2, then iD. All three of them reached 80% market share at their peak. But iD went down in relative terms because of That could only happen if editors don't use iD much. That's a good thing, as it show they are new mappers. And it's a bad thing, as it shows that we haven't (yet) succeeded in getting them more deeply involved in OSM.

To make some of that more clear, here's three more charts. Changesets per contributor show that JOSM users are quite productive. There's also a very clear growth path for JOSM users. Merkaartor has a similar pattern. hardly shows, with just 4 changesets per contributor.

Some changesets are bigger than other. JOSM changesets are the biggest. Potlatch2 are somewhere in the middel, and iD changesets are quite small. The average changeset has only 2 changes.

So what's the overall productivity of contributors? Here JOSM is quite extreme.

stats2 full size

Note that this doesn't say anything about quality or amount of work. For example a JOSM changeset editing thousands of objects could have been made in minutes. Someone could have surveyed a day to collect ten POIs and map them with iD.

As one of the few remaining Potlatch users, I had to make this graph too:

potlatch focus

As Potlatch2 lost the status of default editor, the remaining users became ever more productive. That makes sense, because "low engagement" contributors won't find the way to that editor. So the only relevant numbers are those for 2011 and 2012. And compared to that, the low numbers for iD are striking. Low numbers may mean that more people with less motivation can be pushed to make at least one edit, so you can call that a success. This is the argument to call a editing a huge success. But it can also mean that the editor isn't as inviting to work on more stuff than just on the thing you wanted to do. Anyway, a much deeper analysis would be necessary to draw any conclusions on that. You'd have to take account of previous mapping experience, later shifts to JOSM, and possible differences between 2011 and 2016 newbies, to name just a few controls. Also: the numbers are rising every year, even as it remains the editor for new contributors.

And then there's the good old Potlatch 1 of course. There's only one reason to open that ugly duckling: go to a place where you think something was deleted, press U, and you can see and recover it. It is amazing that no other editor has a similar feature that makes this so simple.

You can download the cleaned up data here (dropbox).

Preparing accurate history and caching changesets

Posted by geohacker on 12 April 2017 in English (English)

It's important to see what exactly happened to features in a changeset. This means identifying the state of each feature, the history, including geometry and tags that changed. The OSM changeset page doesn't give you a clear idea of what happened in a changeset - you see a list of features that changed, and the bounding box of the changeset.


The changeset XML from OpenStreetMap only has current version of the features that changed in the changeset.

Overpass offers augmented diffs between two timestamps that contains current and previous versions of each feature that changed in that period. We put together an infrastructure that queries Overpass minutely, prepares changeset representation as a JSON, and stashes them on S3. The augmented diffs are also cached on S3. This means that the load to Overpass instance can reduce drastically while many of us are looking at the same changeset.


This is directly used in changeset-map - a utility to visualise OSM changesets.


The cached changeset JSONs are available here: The JSON looks like this for a changeset by user Rezhin Ali.

This is inspired by the work Development Seed did with Planet Stream. We use osm-adiff-parser to convert the augmented diff to changeset JSON.

// 20170411184718

  "elements": [
      "id": "4787752634",
      "lat": "36.1823442",
      "lon": "44.0158941",
      "version": "2",
      "timestamp": "2017-04-11T13:12:35Z",
      "changeset": "47656996",
      "uid": "5323129",
      "user": "Rezhin Ali",
      "old": {
        "id": "4787752634",
        "lat": "36.1823442",
        "lon": "44.0158941",
        "version": "1",
        "timestamp": "2017-04-11T08:02:21Z",
        "changeset": "47649032",
        "uid": "5323129",
        "user": "Rezhin Ali",
        "action": "modify",
        "type": "node",
        "tags": {
          "name": "ێەبد مەنان",
          "name:ar": "ێەبد مەنان",
          "shop": "car"
      "action": "modify",
      "type": "node",
      "tags": {
        "name": "Abd Manan",
        "name:ar": "Abd Manan",
        "shop": "car"
  "metadata": {
    "id": "47656996",
    "created_at": "2017-04-11T13:12:34Z",
    "open": "true",
    "user": "Rezhin Ali",
    "uid": "5323129",
    "min_lat": "36.1823442",
    "min_lon": "44.0158941",
    "max_lat": "36.1823442",
    "max_lon": "44.0158941",
    "comments_count": "0",
    "tag": [
        "k": "created_by",
        "v": "MAPS.ME ios 7.2.3"
        "k": "comment",
        "v": "Updated a car shop"
        "k": "bundle_id",
        "v": "com.mapswithme.full"

Empty changesets

It's possible that certain changesets are empty. They could have been opened, but failed to upload changes due to unreliable network, and eventually gets closed in 60 minutes. Empty changesets are not cached.

Long changesets

Changesets can also remain open for a long time. For example this one from user Manuchehr was opened 36 mins. Experienced users like to survey outdoors, and upload data in bulk. Some editors also don't close changesets automatically. Idle changesets get closed eventually after 60 mins.

When features of changeset comes through in a later minutely diff, we update the cache on S3. This will ensure, changeset remain complete.

Database transactions and augmented diffs

A changeset being closed doesn't mean that all features that changed have been committed to the OSM database, and appear in the minutely diff right after. Some features may take longer to commit to the database, we handle these by updating the augmented diff from S3, and then recreating the changeset JSON. You can read more about this case here.

Missing changesets

Changesets that are after March 1, 2017 are cached. We are considering doing a slow backfill, but this is entirely dependent on Overpass. If you see something missing, or unclear, please open a ticket and let us know!

Location: Indiranagar 1st Stage, Indiranagar, Bengaluru, Bangalore Urban, Karnataka, 560001, India

10 years of OpenStreetMap in Tyumen Oblast (Russia)

Posted by mavl on 12 April 2017 in English (English)

Tyumen Oblast is small region in Western Siberia. It has total area about 160 000 square kilometres and population about 1 340 000 (308 persons (or 0.02%) are OSM contributors).

Years and years ago first human settlement was marked on OpenStreetMap in Tyumen Oblast. It was Tyumen (was added by contributor LA2). This event happened in 2007.

Many local contributors improved OpenStreetMap after it.

New local contributors

Year is an year when an account was created.

Probably, these contributors live in Tyumen Oblast because they usually edit in this area. Of course, some contributors of other regions improve OpenStreetMap in this area also.

Since 2016 there are local contributors.

New local contributors contributor is a contributor who created first changeset/note using program. One contributor created his account in 2011 but he created his first changeset in 2016.

Many local contributors (64%) usually edit Tyumen's map. Tyumen is a regional capital with population about 720 000. Tyumen city's population amounts to about 54% of Tyumen Oblast's population.

Local contributors

Tyumen Oblast has 2 cities, 3 towns and about 1200 villages. Now OpenStreetMap contains all these human settlements as nodes (or in more details). It's a good result.


Location: Комарово, Калининский административный округ, Tyumen, городской округ Тюмень, Tyumen Oblast, Ural Federal District, 625000, Russian Federation

Cayo District

Posted by Charlie_Plett on 12 April 2017 in English (English)

2017-03-20 I went selling in Cayo for Country Foods and added dozens of shops to Cayo, Benque Viejo and Bella Vista(Toledo).

Location: Morotown, San Ignacio, Cayo District, Cayo, Belize

Mapeamento Colaborativo de Jacaraípe - Meu lugar através de fotos

Posted by Sarah Mello on 12 April 2017 in Brazilian Portuguese (Português do Brasil)

A foto foi tirada no dia 08/03/2017 ás 16:00 horas no pôr-do-sol. Nota-se que ao lado direito da foto existe um muro que é da Igreja Presbiteriana Central de Jacaraípe, ao lado esquerdo é o antigo Clube de Jacaraípe. Mais a frente tem a esquina, depois algumas casas no final da rua e árvores.Estância Monazítica, Jacaraípe, Serra, ES, Brasil

Location: Estância Monazétoca, Região de Jacaraípe e Manguinhos, Serra, Microrregião Vitória, Região Metropolitana da Grande Vitória, Mesorregião Central Espírito-Santense, Espírito Santo, Região Sudeste, Brasil
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