Tick chart for AUDJPY, showing each change in the ask or bid price. (If the spread is very tight then the lines may overlap, and only the ask line may be visible.)
As well as a plain tick chart, you can use the "Tick speed" mode to add an indicator showing how long it has taken for the last N ticks to happen. The lower the histogram, the faster the market is moving.
The "Timed" mode still shows each change in the ask or bid price, but the X axis of the chart is set to constant units of time. You can use this to view individual ticks while still being able to distinguish between fast and slow periods in the market.
The "Candles" mode draws tick candles. These are candles which form each time that N ticks happen, rather than being time-based.
The AUDJPY pair is the abbreviation for the Australian Dollar (AUD) against the Japanese Yen (JPY). This is an exciting pair for its relation to risk. The pair is often among one of the most highly correlated pairs to price action in US equities on a short to medium term basis. The pair generally tends to rise in a low risk environment on carry flows while the opposite is true when we see a 'risk-off' approach in the markets.