config-letter.json

{
    "draw-ticks"     : true,
    "draw-map"       : true,
    "draw-map-frame" : true,
    "draw-scale"     : true,

    "paper-width"  : "11 in",
    "paper-height" : "8.5 in",

    "zoom" : 15,

    "center-lat" : 19.4621106,
    "center-lon" : -96.9040473,
    "map-scale"  : 50000,

    "map-width"  : "10 in",
    "map-height" : "7.375 in",
    "map-to-left-margin" : "0.5 in",
    "map-to-top-margin" : "0.375 in",

    "scale-xpos" : "5.5 in",
    "scale-ypos" : "8.125 in"
}