Introducing area charts

Area charts are similar to line charts but are slightly different in the way that they show colors below the lines. This color-filled area displays quantitative data in a more distinguished manner. Area charts are typically useful for displaying multiple series with large sets of data points.

Consider the following example showing the net income of Microsoft from 2005 to 2013. Due to the relatively large number of data points (that is, 10), it's more appropriate to visualize this data by an area chart instead of a column or bar chart.

(function() {
  $( '#chart_container' ).highcharts({
    chart: {
      type: 'area'
    },
    title: {
      text: 'Yearly Net Income of Microsoft'
    },
    subtitle: {
      text: 'Source: Microsoft'
    },
    xAxis: {
      categories: [2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013]
    },
    yAxis: {
      title: {
        text: 'Revenue in billion USD'
      }
    },
    series: [{
      name: 'Microsoft',
      data:...