coords

a - For use with the below <code>shape</code> attribute, this attribute used a comma-separated list of numbers to define the coordinates of the link on the page. area - A set of values specifying the coordinates of the hot-spot region. The number and meaning of the values depend upon the value specified for the <strong>shape</strong> attribute. For a <code>rect</code> or rectangle shape, the <strong>coords</strong> value is two x,y pairs: left, top, right, and bottom. For a <code>circle</code> shape, the value is <code>x,y,r</code> where <code>x,y</code> is a pair specifying the center of the circle and <code>r</code> is a value for the radius. For a <code>poly</code> or polygon shape, the value is a set of x,y pairs for each point in the polygon: <code>x1,y1,x2,y2,x3,y3,</code> and so on. In HTML4, the values are numbers of pixels or percentages, if a percent sign (%) is appended; in HTML5, the values are numbers of CSS pixels.