Just a couple quick questions that i'm sure i am just being stupid about

1. When I create a motion path, why doesn't my curve show the start and end frames onscreen. On the tutorial, the curve has a 1, at the beginning of the curve where the frame starts, and a 200 at the end, where the curve ends. How do I make this appear.

2. When using the graph editor, why doesn't my object update in the viewport? Again, this works in the tutorial, where he edits a keyframe, such as Y position in the graph, and you can see the results in your viewport. Mine doesn't, how do i make this happen, because it would be very useful.

Thanks

David