Following a referendum in 1997, in which the Scottish electorate voted for devolution, the powers of the devolved legislature were specified by the Scotland Act 1998. The Act delineates the legislative competence of the Parliament – the areas in which it can make laws – by explicitly specifying powers that are "reserved" to the Parliament of the United Kingdom. The Scottish Parliament has the power to legislate in all areas that are not explicitly reserved to Westminster. The UK Parliament retains the ability to amend the terms of reference of the Scottish Parliament, and can extend or reduce the areas in which it can make laws. The first meeting of the new Parliament took place on 12 May 1999.