Scrolling the trace

In most cases, OLT cannot display all events simultaneously. The tool therefore provides three scrolling mechanisms for navigating along the trace:

Slide bar

slide bar

The slide bar moves the selected event along its trace line. The total number of events on the trace is shown on the slide ruler. To bring a particular event into view, slide the pointer along the ruler. The numbers to the left of the ruler (3/4 in the example above) show the number of the selected event, over the total number of events on the line.

Trace line arrows

arrows

The trace lines themselves have horizontal scroll arrows on each end. Click on these arrows to move to the right or left along a single line. As you go, the trace is refreshed according to the partial-order display principle.

Scroll buttons

scroll buttons

The scroll buttons move screen-by-screen through the trace. Clicking on a scroll button places the selected event on the right or left edge of the trace, and refreshes the other events according to partial order.

Undo Scrolling
To undo the most recent scroll operation, select Edit > Undo scrolling. This returns you to the previously selected event, but may not produce exactly the same trace that existed before scrolling.


Selected event
Partial-order display

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Navigating the trace