TMS FNC Route Calculator TTMSFNCRouteCalculator is an interactive route-building control that works alongside a map control. It lets users build routes by clicking on the map, supports undo/redo history, and provides GPX import/export for route data. Documentation Start here Use when Get started You want a working route calculator in a few steps. Guides You want task-oriented chapters: route building, undo/redo, and GPX. API reference You want class, property, method, and event details. Release notes You want what changed in recent versions. Key classes Class Description TTMSFNCRouteCalculator Route calculator control. TTMSFNCRouteCalculatorOptions Route display and behaviour options. TTMSFNCRouteCalculatorRoute Calculated route result. TTMSFNCRouteCalculatorSegment Individual segment within a route.