-# 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_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_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"
+ url_aliases ["/om-local-2020-04", "/om-local"]
+ default_layer 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/2017-10/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/2017-10/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