Grass Valley NewsEdit LT v.4.1 - Manual (Page 146)

Chapter 9 Adding Transitions to Your Sequences
146 Digital News Production
4. Enter the Duration of the transition.
The default duration is 15 frames.
5. Move the mouse over the cut point between the two clips.
The cursor turns into a red X.
6. Click the mouse once to place the effect.
The transition appears on the Timeline as a pink box with diagonal lines in
it, indicating the transition is unrendered.
When you play the sequence in the Timeline, you see the transitions in the
Video window.
NOTE: You need the Real-Time Preview Option to see transitions
when you play a sequence before rendering it. If you don’t have this
option, you need to render all transitions before you can view them.
Transition