"custom": "Custom",
"custom_button": "Edit custom background",
"custom_prompt": "Enter a tile URL template. Valid tokens are {z}, {x}, {y} for Z/X/Y scheme and {u} for quadtile scheme.",
"custom": "Custom",
"custom_button": "Edit custom background",
"custom_prompt": "Enter a tile URL template. Valid tokens are {z}, {x}, {y} for Z/X/Y scheme and {u} for quadtile scheme.",