The Feature Construction toolbar
The Feature Construction mini toolbar provides quick access to some of the most commonly used commands when editing. It appears near your pointer when you are digitizing segments once you have placed the first vertex in a sketch. The toolbar is semitransparent so you can see the map under it, although it becomes opaque when you rest your pointer over the toolbar. To use a command on the Feature Construction toolbar, simply click it.
Each time you click the map with a sketch tool used to create segments, such as the Line or Polygon tool, the Feature Construction toolbar appears. The toolbar provides a shortcut to the segment construction methods on the Editor toolbar, so you can create straight or curved segments and easily access any of the other construction methods. As you click the map, the Feature Construction toolbar follows your clicks. The toolbar is not intended to be docked but rather to float freely around your sketch. If you find that it is in the way of where you want to place a new vertex, press the TAB key to relocate the toolbar. Pressing SHIFT+TAB hides the toolbar temporarily.
The Feature Construction toolbar also contains commands that allow you to create segments parallel or perpendicular to an existing feature. For example, if you click Constrain Parallel and click a feature, the next segment in the sketch will be parallel to the feature you clicked. As you move the pointer, the length of the segment can change, but not the angle. To clear a sketch constraint, press the ESC key.
While you will likely use the Feature Construction toolbar most often when creating new features, it is also useful when you are using a sketch to edit an existing feature, such as when reshaping or splitting lines or polygons. For example, to modify the shape of a polygon, click the Reshape Feature tool on the Editor toolbar; click the polygon; then use the Feature Construction toolbar, if needed, to help digitize the new shape.
If you do not want the Feature Construction toolbar to appear, turn off the display of mini toolbars on the General tab of the Editing Options dialog box.