The Vizlib Bar Chart supports Reference Lines for both the y-Axis and for the x-Axis.
Define the Measure or Dimension Value against which the reference line will be plotted in the chart.
Give your reference line a label.
Define the position of the label, to be either above(left) or below (right) of the reference line.
Define the position of the label, to be either at the start, middle or end of the reference line.
Choose the font color for your label.
Choose the font size for your label.
Change the style of the label to bold, italic or underline.
Play around with the text opacity of your reference line label.
Define the color of your reference line.
Define the width (thickness) of your reference line.
Define the style of your line to be either dashed or normal.
Show/Hide the reference line depending on a calculation condition.