A stretchable timeline visualization using GoJS v3 displays a horizontal bar with tick marks and date labels, along with event nodes positioned above it. Users can resize the bar by dragging its right handle, which dynamically updates the tick and label intervals. The code implements a custom `TimelineLayout` and `BarLink` (not shown) to connect event nodes to the timeline, using graduated shape features for ticks and `graduatedFunction` for date formatting. Event data includes Persian-language meeting titles with corresponding dates in 2016.