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Nasal/MFD.pages.nas
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@@ -49,6 +49,218 @@ displayClass.MFD = {
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             me.device.buttons.ENT = me.device.buttons.ValidateTMRREF;
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         },
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     },
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+    NRST : {
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+        'NEAREST AIRPORTS': func {
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+            var airports = findAirportsWithinRange(99.99);
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+            var obj_infos = [
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+                {text: size(airports) ~ ' NEAREST AIRPORTS', type: 'title'},
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+                {type: 'separator'},
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+            ];
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+            var name_max_length = 0;
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+            forindex (var idx; airports) {
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+                var info = airportinfo(airports[idx].id);
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+                var (course, distance) = courseAndDistance(info);
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+                var name = sprintf('%s (%s)', airports[idx].id, airports[idx].name);
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+                if (size(name) > name_max_length)
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+                    name_max_length = size(name);
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+
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+                append(obj_infos, {
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+                        text: name,
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+                        type: (idx ? 'editable' : 'selected') ~ '|immediate|end-of-line',
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+                        scrollgroup: idx,
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+                    }
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+                );
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+                append(obj_infos, {
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+                        text: sprintf(' %s DST %2dNM CRS %03d', utf8.chstr(9658), distance / 1852.0, course),
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+                        type: 'normal|end-of-line',
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+                        scrollgroup: idx
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+                    }
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+                );
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+            }
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+            append(obj_infos, {type: 'separator'});
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+            var windowId = 'NEAREST AIRPORTS';
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+            var obj_s = size(obj_infos);
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+            var lines = 9;
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+            me.device.windows.draw(
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+                windowId,
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+                {x: 1014 - (name_max_length * 10), y: 778 - ((lines + 3) * 24), w: name_max_length * 10, l: lines, sep: 1},
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+                obj_infos,
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+                {lines: 4, columns: 1}
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+            );
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+            me.device.buttons.CLR = func {
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+                me.device.windows.del(windowId);
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+                me.device.buttons.ENT = func;
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+                me.device.buttons.CLR = func;
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+                me.device.knobs.FmsInner = func;
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+                me.device.knobs.FmsOuter = me.device.knobs.MFD_select_page_group;
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+            }
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+            me.device.knobs.FmsInner = me.device.knobs.NavigateMenu;
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+            me.device.knobs.FmsOuter = me.device.knobs.NavigateMenu;
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+            me.device.buttons.ENT = func (a = 0) {
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+                if (a) return;
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+                me.device.windows.del(windowId);
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+                var (_, selected) = split('-', me.device.windows.selected);
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+                var (airport_id, _) = split(" ", obj_infos[selected].text);
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+                call(me.device.display.MFD._ShowAirportInfo, [airport_id], me);
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+            };
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+        },
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+        'NEAREST INTERSECTIONS': func {
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+            call(me.device.display.MFD._NearestNavaids, ['fix'], me);
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+        },
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+        'NEAREST NDB': func {
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+            call(me.device.display.MFD._NearestNavaids, ['ndb'], me);
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+        },
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+        'NEAREST VOR': func {
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+            call(me.device.display.MFD._NearestNavaids, ['vor'], me);
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+        },
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+    },
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+    _NearestNavaids: func (navaid_type) {
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+        var navaids = findNavaidsWithinRange(99.99, navaid_type);
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+        var obj_infos = [
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+            {text: size(navaids) ~ ' NEAREST ' ~ string.uc(navaid_type), type: 'title'},
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+            {type: 'separator'},
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+        ];
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+        var idx = 0;
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+        var name_max_length = 20;
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+        foreach (var navaid; navaids) {
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+            var (course, distance) = courseAndDistance(navaid);
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+            var name = navaid.id ~ ' (' ~ navaid.name ~ ')';
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+            if (size(name) > name_max_length)
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+                name_max_length = size(name);
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+
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+            append(obj_infos, {
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+                    text: navaid.id ~ ' (' ~ navaid.name ~ ')',
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+                    type: (idx ? 'editable' : 'selected') ~ '|immediate|end-of-line',
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+                    scrollgroup: idx,
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+                }
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+            );
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+            append(obj_infos, {
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+                    text: sprintf(' %s DST %2dNM CRS %03d', utf8.chstr(9658), distance, course),
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+                    type: 'normal|end-of-line',
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+                    scrollgroup: idx
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+                }
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+            );
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+            idx += 1;
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+        }
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+        append(obj_infos, {type: 'separator'});
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+        var windowId = obj_infos[0].text;
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+        var obj_s = size(obj_infos);
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+        var lines = 9;
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+        me.device.windows.draw(
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+            windowId,
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+            {x: 1014 - (name_max_length * 10), y: 778 - ((lines + 3) * 24), w: name_max_length * 10, l: lines, sep: 1},
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+            obj_infos,
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+            {lines: 4, columns: 1}
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+        );
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+        me.device.buttons.CLR = func {
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+            me.device.windows.del(windowId);
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+            me.device.buttons.ENT = func;
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+            me.device.buttons.CLR = func;
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+            me.device.knobs.FmsInner = func;
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+            me.device.knobs.FmsOuter = me.device.knobs.MFD_select_page_group;
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+        }
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+        me.device.knobs.FmsInner = me.device.knobs.NavigateMenu;
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+        me.device.knobs.FmsOuter = me.device.knobs.NavigateMenu;
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+        me.device.buttons.ENT = func (a = 0) {
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+            if (a) return;
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+            me.device.windows.del(windowId);
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+            var (_, selected) = split('-', me.device.windows.selected);
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+            var (navaid_id, _) = split(" ", obj_infos[selected].text);
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+            if (navaid_type == 'airport')
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+                call(me.device.display.MFD._ShowAirportInfo, [navaid_id], me);
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+            else
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+                call(me.device.display.MFD._ShowNavaidInfo, [navaid_id, navaid_type], me);
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+        };
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+    },
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+    _ShowNavaidInfo: func (navaid_id, navaid_type) {
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+        var info = findNavaidsByID(navaid_id, navaid_type);
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+        if (size(info) == 0) return;
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+        me.device.knobs.FmsInner = func;
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+        me.device.knobs.FmsOuter = func;
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+        me.device.buttons.ENT    = func;
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+        print(typeof(info[0]));
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+        var obj_infos = [
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+            {text: info[0].id ~ ' INFORMATION', type: 'title'},
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+            {type: 'separator'},
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+            {text: 'ID    ' ~ info[0].id, type: 'normal|end-of-line'},
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+            {text: 'NAME  ' ~ info[0].name, type: 'normal|end-of-line'},
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+            {text: 'TYPE  ' ~ info[0].type, type: 'normal|end-of-line'},
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+            {text: sprintf('LON   %.3f %s', abs(info[0].lon), info[0].lon > 0 ? 'E' : 'W'), type: 'normal|end-of-line'},
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+            {text: sprintf('LAT   %.3f %s', abs(info[0].lat), info[0].lat > 0 ? 'N' : 'S'), type: 'normal|end-of-line'},
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+        ];
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+        call(func {return info[0].range }, [], nil, nil, var errors = []);
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+        if (!size(errors))
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+            append(obj_infos, {text: sprintf('RANGE %i NM', info[0].range * 1.852), type: 'normal|end-of-line'});
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+        call(func {return info[0].frequency }, [], nil, nil, var errors = []);
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+        if (!size(errors))
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+            append(obj_infos, {text: sprintf('FREQ  %.2f kHz', info[0].frequency / 100), type: 'normal|end-of-line'});
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+        var lines = size(obj_infos);
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+        var windowId = 'NAVAID INFORMATIONS';
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+        me.device.windows.draw(
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+            windowId,
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+            {x: 720, y: 758 - ((lines + 3) * 24), w: 300, l: lines, sep: 1},
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+            obj_infos
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+        );
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+        me.device.buttons.CLR = func {
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+            me.device.windows.del(windowId);
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+            me.device.buttons.ENT = func;
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+            me.device.buttons.CLR = func;
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+            me.device.knobs.FmsInner = func;
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+            me.device.knobs.FmsOuter = me.device.knobs.MFD_select_page_group;
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+        }
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+    },
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+    _ShowAirportInfo: func (airport_id) {
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+        me.device.knobs.FmsInner = func;
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+        me.device.knobs.FmsOuter = func;
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+        me.device.buttons.ENT    = func;
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+        var info = airportinfo(airport_id);
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+        var obj_infos = [
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+            {text: airport_id ~ ' INFORMATION', type: 'title'},
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+            {type: 'separator'},
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+            {text: sprintf('ELEVATION %.0d FT', info.elevation * 3.28), type: 'normal|end-of-line'},
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+            {text: sprintf('LON: %.3f %s', abs(info.lon), info.lon > 0 ? 'E' : 'W'), type: 'normal|end-of-line'},
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+            {text: sprintf('LAT: %.3f %s', abs(info.lat), info.lat > 0 ? 'N' : 'S'), type: 'normal|end-of-line'},
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+            {type: 'separator'},
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+            {text: 'RUNWAYS', type: 'title'},
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+        ];
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+        foreach (var rwy; sort(keys(info.runways), string.icmp)) {
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+            var rwyInfo = sprintf("%-3s %4.0dm %3.0d°",
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+                                  rwy,
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+                                  info.runways[rwy].length,
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+                                  info.runways[rwy].heading);
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+            if (info.runways[rwy].ils != nil) {
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+                rwyInfo = sprintf("%s %3.3f Mhz", rwyInfo, info.runways[rwy].ils.frequency / 100);
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+            }
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+            append(obj_infos, {text: rwyInfo, type: 'normal|end-of-line'});
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+        }
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+        var sep = 2; # to count separators, already two printed
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+        if (size(info.comms()) > 0) {
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+# TODO: find nearby freqs if none found for airport
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+            append(obj_infos, {type: 'separator'}); sep += 1;
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+            append(obj_infos, {text: 'COMMS FREQUENCIES', type: 'title|end-of-line'});
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+            var freqs = {};
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+            var comms = info.comms();
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+            foreach (var c; comms)
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+                freqs[c.ident] = sprintf("%.3f", c.frequency);
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+
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+            foreach (var f; sort(keys(freqs), string.icmp))
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+                append(obj_infos, {text: sprintf('%-15s %.3f', f, freqs[f]), type: 'normal|end-of-line'});
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+        }
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+        var lines = size(obj_infos) - sep; # minus the separators
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+        var windowId = 'AIRPORT INFORMATIONS';
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+        me.device.windows.draw(
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+            windowId,
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+            {x: 720, y: 758 - ((lines + 3) * 24), w: 300, l: lines, sep: 1},
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+            obj_infos
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+        );
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+        me.device.buttons.CLR = func {
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+            me.device.windows.del(windowId);
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+            me.device.buttons.ENT = func;
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+            me.device.buttons.CLR = func;
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+            me.device.knobs.FmsInner = func;
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+            me.device.knobs.FmsOuter = me.device.knobs.MFD_select_page_group;
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+        }
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+    },
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 };
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 displayClass.setMFDPages = func {
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