Euro cheques, electronic transfers, banking, etc.) at midnight on 1 January 1999, when the national currencies of participating countries (the eurozone) ceased to exist independently. Their exchange rates were locked at fixed rates against each other. The euro thus became the successor to the European Currency Unit (ECU). The notes and coins for the old currencies, however, continued to be used as legal tender until new euro notes and coins were introduced on 1 January 2002. The changeover period during which the former currencies' notes and coins were exchanged for those of the euro lasted about two months, until 28 February
Currency pair = Cable = GBP/USD. The currency pairs that do not involve USD are called "cross currency pairs", such as GBP/JPY. Pairs that involve the euro are often called "euro crosses", such as EUR/GBP. Currencies are traded in fixed contract sizes, specifically called lot sizes, or multiples thereof. The standard lot size is 100,000 units. Many retail trading firms also offer 10,000-unit (mini lot) trading accounts and a few even 1,000-unit (micro lot). The officially quoted rate is a spot price. In a trading market however, currencies are offered for sale at an offering price (the "ask price"), and traders looking