Drawing Tools can be applied, moved, and formatted, directly on a chart, providing tremendous flexibility. Many drawing tools allow you to analyze new data on a chart by extending the drawing object to the left or to the right of the chart. You can use them to call attention to any area of a chart you wish.
Equidistant Channel may be extended to the left and right at once.
If You extend an Equidistant Channel, its length is extended while the slope remains the same. If You want to extend an Equidistant Channel to future bars, you should extend it to the Right. If You want to extand an Equidistant Channel to historical bars, You should extend it to the Left.