This option selects the current feature in a Terrain. To move between points on the current feature, use <Ctrl-N> or <Ctrl-B> (see View - Next Point )
For reversible and rapid movement between features in the current Terrain, you can use the <Tab> and <Shift-Tab> key combinations instead of the View - Next Feature function. You can also select features by a left mouse button click if you have the mouse in select mode. To shift mouse into select mode, right click mouse button and choose Select with Mouse.