The market overview lets you quickly compare price movements on different timescales.
The overview shows three gauges, for the price movement during the last 60 minutes, 24 hours, and 5 days.
Each gauge shows the current price in relation to the high-low range (with prices). A gauge which is
mostly blue means that the current price is towards the top end of the range; orange means that the price
is towards the lower end of the range. The inner bar then shows the open price for the period, and the
corresponding % change.
Below the gauges are three simple candle charts, letting you compare short-term market activity on
the M5, M15 and H1 timeframes.
The XRPUSD pair is the abbreviation of Ripple (XRP) against the US Dollar. Ripple is another cryptocurrency like bitcoin.
The XRPUSD pair is a crypto/fiat pair as well. It is not an official
currency pair, as LTC is not considered a "proper" currency for now, but it can be traded through various exchanges.