Template:Feature num

The index to the feature. This will be 1 for the first feature, 2 for the second etc.

If you have selected a shape, then 1 will be the first line/arc in the shape, 2 will be the second.

If you have selected a number of points, lines and circles, then index 1 will give you the first

feature that you selected, 2 will be the second (in the order that you selected them).