en to en_GB translation catalogue (4 entries)

en: [url]
en_GB: [URL]

[ctx: @action focuses the filelight view on a given map segment]
en: Center Map Here
en_GB: Centre Map Here

[ctx: @title:group]
en: Color Scheme
en_GB: Colour Scheme

[ctx: @option:radio a color scheme variant]
en: System colors
en_GB: System colours
