+
+# ======= Diff layers =======
+
+imagery_layer "gb_os_sv_diff_2010_04_2010_11" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to November 2010"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2010-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2010"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2010-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2011_05" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to May 2011"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2011-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2011"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2011-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2011_11" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to November 2011"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2011-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2011"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2011-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2012_05" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to May 2012"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2012-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2012"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2012-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2012_11" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to November 2012"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2012-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2012"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2012-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2013_05" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to May 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2013-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2013-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2013_11" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to November 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2013-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2013-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2014_04" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to April 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2014-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2014-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2014_10" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to October 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2014-10-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2014-10"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_04_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes April 2010 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-04-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-04-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2011_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to May 2011"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2011-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2011"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2011-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2011_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to November 2011"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2011-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2011"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2011-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2012_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to May 2012"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2012-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2012"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2012-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2012_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to November 2012"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2012-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2012"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2012-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2013_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to May 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2013-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2013-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2013_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to November 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2013-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2013-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2014_04" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to April 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2014-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2014-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2014_10" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to October 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2014-10-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2014-10"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2010_11_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes November 2010 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2010-11-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2010-11-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2011_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to November 2011"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2011-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2011"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2011-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2012_05" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to May 2012"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2012-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2012"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2012-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2012_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to November 2012"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2012-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2012"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2012-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2013_05" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to May 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2013-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2013-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2013_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to November 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2013-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2013-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2014_04" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to April 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2014-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2014-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2014_10" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to October 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2014-10-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2014-10"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_05_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes May 2011 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-05-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-05-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_11_2012_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2011 to May 2012"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-11-2012-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2012"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-11-2012-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_11_2012_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2011 to November 2012"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-11-2012-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2012"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-11-2012-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_11_2013_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2011 to May 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-11-2013-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-11-2013-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_11_2013_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2011 to November 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-11-2013-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-11-2013-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_11_2014_04" do
+ site "os.openstreetmap.org"
+ title "Changes November 2011 to April 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-11-2014-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-11-2014-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_11_2014_10" do
+ site "os.openstreetmap.org"
+ title "Changes November 2011 to October 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-11-2014-10-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2011"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-11-2014-10"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_11_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2011 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-11-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-11-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_11_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2011 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-11-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-11-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2011_11_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes November 2011 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2011-11-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2011-11-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_05_2012_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2012 to November 2012"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-05-2012-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2012"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-05-2012-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_05_2013_05" do
+ site "os.openstreetmap.org"
+ title "Changes May 2012 to May 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-05-2013-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-05-2013-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_05_2013_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2012 to November 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-05-2013-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-05-2013-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_05_2014_04" do
+ site "os.openstreetmap.org"
+ title "Changes May 2012 to April 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-05-2014-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-05-2014-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_05_2014_10" do
+ site "os.openstreetmap.org"
+ title "Changes May 2012 to October 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-05-2014-10-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-05-2014-10"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_05_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes May 2012 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-05-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-05-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_05_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2012 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-05-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-05-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_05_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes May 2012 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-05-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-05-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_11_2013_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2012 to May 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-11-2013-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-11-2013-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_11_2013_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2012 to November 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-11-2013-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-11-2013-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_11_2014_04" do
+ site "os.openstreetmap.org"
+ title "Changes November 2012 to April 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-11-2014-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-11-2014-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_11_2014_10" do
+ site "os.openstreetmap.org"
+ title "Changes November 2012 to October 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-11-2014-10-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-11-2014-10"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_11_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2012 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-11-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-11-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_11_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2012 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-11-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-11-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2012_11_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes November 2012 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2012-11-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2012-11-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_05_2013_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2013 to November 2013"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-05-2013-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2013"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-05-2013-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_05_2014_04" do
+ site "os.openstreetmap.org"
+ title "Changes May 2013 to April 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-05-2014-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-05-2014-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_05_2014_10" do
+ site "os.openstreetmap.org"
+ title "Changes May 2013 to October 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-05-2014-10-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-05-2014-10"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_05_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes May 2013 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-05-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-05-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_05_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2013 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-05-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-05-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_05_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes May 2013 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-05-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-05-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_11_2014_04" do
+ site "os.openstreetmap.org"
+ title "Changes November 2013 to April 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-11-2014-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-11-2014-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_11_2014_10" do
+ site "os.openstreetmap.org"
+ title "Changes November 2013 to October 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-11-2014-10-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-11-2014-10"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_11_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes November 2013 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-11-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-11-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_11_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes November 2013 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-11-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-11-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2013_11_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes November 2013 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2013-11-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2013-11-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2014_04_2014_10" do
+ site "os.openstreetmap.org"
+ title "Changes April 2014 to October 2014"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2014-04-2014-10-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2014"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2014-04-2014-10"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2014_04_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes April 2014 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2014-04-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2014-04-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2014_04_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes April 2014 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2014-04-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2014-04-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2014_04_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes April 2014 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2014-04-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2014-04-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2014_10_2015_05" do
+ site "os.openstreetmap.org"
+ title "Changes October 2014 to May 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2014-10-2015-05-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2014-10-2015-05"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2014_10_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes October 2014 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2014-10-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2014-10-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2014_10_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes October 2014 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2014-10-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2014-10-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2015_05_2015_11" do
+ site "os.openstreetmap.org"
+ title "Changes May 2015 to November 2015"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2015-05-2015-11-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2015"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2015-05-2015-11"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2015_05_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes May 2015 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2015-05-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2015-05-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_sv_diff_2015_11_2016_04" do
+ site "os.openstreetmap.org"
+ title "Changes November 2015 to April 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/os-sv/ossv-diff-2015-11-2016-04-combined.vrt"
+ copyright "Contains Ordnance Survey data © Crown copyright and database right 2016"
+ extension "os_sv_diff_png"
+ url_aliases ["/sv-diff-2015-11-2016-04"]
+ overlay true
+end
+
+imagery_layer "gb_os_om_local_2016_10" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - October 2016"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2016-10/os-openmap-local-2016-10.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2016"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2017_04" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - April 2017"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2017-04/os-openmap-local-2017-04.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2017"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2017_10" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - October 2017"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2017-10/os-openmap-local-2017-10.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2017"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2018_04" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - April 2018"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2018-04/os-openmap-local-2018-04.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2018"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2018_05" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - May 2018"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2018-05/os-openmap-local-2018-05.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2018"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2019_04" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - April 2019"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2019-04/os-openmap-local-2019-04.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2019"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2020_04" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - April 2020"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2020-04/os-openmap-local-2020-04-combined-sea-average-zstd22.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2020"
+ revision 2
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2020_10" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - October 2020"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2020-10/os-openmap-local-2020-10.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2020"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2021_04" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - April 2021"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2021-04/os-openmap-local-2021-04.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2021"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2021_10" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - October 2021"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2021-10/os-openmap-local-2021-10.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2021"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2022_04" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - April 2022"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2022-04/os-openmap-local-2022-04.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2022"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2022_10" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - October 2022"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2022-10/os-openmap-local-2022-10.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2022"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2023_04" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - April 2023"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2023-04/os-openmap-local-2023-04.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2023"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+end
+
+imagery_layer "gb_os_om_local_2023_10" do
+ site "os.openstreetmap.org"
+ title "OS OpenMap Local - October 2023"
+ projection "EPSG:27700"
+ source "/data/imagery/gb/openmap-local/2023-10/os-openmap-local-2023-10.vrt"
+ copyright "Contains OS data © Crown copyright and database right 2023"
+ background_colour "213 244 248" # OS OpenMap Local Water Blue
+ extension "os_om_local_png"
+ url_aliases ["/om-local-2023-10", "/om-local"]
+ default_layer true
+end