You can add clips to the pipeline
            to use with nodes that require extra clips. For example, the Difference
            Matte node requires two clips.
         
         You can also add new
            clips to use in place of the Front, Back, or Key-In clips you selected
            when you opened the Modular Keyer. You may want to replace an existing
            clip temporarily to see the result, or process the final composite
            with the new clip.
         
         NoteWhen you access the
               Modular Keyer from Action, Action uses the original Front, Back,
               and Key-In clips. If you want to replace these clips, you must return
               to Action and replace them using the Layers menu.
            
         To add a clip to the schematic:
         
         
            - Drag the Desk or Library node from the
               node bar to the schematic.
            
- Do one of the following:
               
                  - If you used the Desk node, select the
                     clip you want to bring into the schematic by clicking its upper-left
                     corner.
                  
- If you used the Library node, select
                     the clip and then click Load.
                  
 You are returned to the
                  Modular Keyer and the clip appears in the schematic.
                
To attach the new clip to a node:
         
         
            - Select Move from the Edit Mode box.
            
- Move the clip to the left of the node
               you want to attach it to.
            
- Select Parent from the Edit Mode box.
            
- Drag the cursor from the right edge of
               the new clip to the appropriate source tab of the node. If it is
               a single input node, drag the cursor to the left side of the node.
               The clip is connected
                  to the node.
                
To replace an existing clip:
         
         
            - Select Move from the Edit Mode box.
            
- Move the clip near the existing clip.
            
- Select Parent from the Edit Mode box.
            
- Detach the old clip from the pipeline
               by dragging the cursor across the part of the pipeline between the
               old clip and the rest of the pipeline.
            
- Connect the new clip to the pipeline
               by dragging the cursor from its right edge to the appropriate source
               tab of the first node on the branch.
            
To replace a clip that was added to the
            pipeline:
         
         
            - Double-click the clip.
               If you added the clip
                  with the Desk node, you are brought back to the EditDesk. If you
                  added the clip with the Library node, you are brought back to the
                  library.
                
- Select another clip.
               It replaces the previous
                  clip in the pipeline.
                
TipDo not leave unused
               clips in the schematic: each time you process or play the clip,
               the Modular Keyer reads all clips off the framestore, even if they are
               not a part of the pipeline.