The timeline appears embedded at the top left of the search window by default. You can pop it out of the window so you can place it freely on your screen, or you can close it. After closing it, you can open it again by clicking the gear icon in the toolbar and then selecting Tools → Event timeline. This useful graph shows a count of the queried events over the period of time set in the Time range selector (more info on the Time range selector in tab 4). The data counts represented in the timeline are plotted before the actual events are loaded in the browser. To avoid overloading the browser's memory, not all the events in the data table are downloaded to the browser. Instead, Devo downloads events in interval blocks within the time range selected. This is important to understand, especially with respect to using the Get Server Counts and Event Loading Indicator described below.
...
You can pop it out of the window so you can place it freely on your screen, or you can close it. After closing it, you can open it again by clicking the gear icon in the toolbar and then selecting the gear icon and clicking Tools → Event timeline.
...
The timeline is a dynamic graph and gives you the ability to:
...