What does the Flash Animation guide layer do?

Guide layer in Flash inside is very common, want to learn flash must first heavy small aspects of learning. What is a guide layer? Like a paper plane, it's going to go to point B, and its trajectory is the guide layer we're going to draw.

1, first we first put a material paper plane into the library, spare

2, we have just the paper aircraft re-library inside pull to the stage. We insert a keyframe here at 30 frames

3. Add a guide layer to the layer here

4. Then draw the trajectory of your movement in the first frame of the guide layer with a pencil

5, select the first frame of layer 1, using the Mobile tool to move the aircraft's magnetic core origin point above the guide line as shown

6. Select the last frame of layer 1, that is, 30 frames move the plane to the last point of the guide line with a moving tool as shown in figure

7. Right-click on the 15 frame of layer 1 to create a motion tween and press CTRL + ENTER to run to see if the plane is moving according to the guide line.