When you add source, it includes both source front and source matte input. When you add a source front only, a black matte will automatically be created.

To add source node, front source and matte source:

1. In the Batch Paint menu, click Add.

   The Desktop appears.

2. Select a source front clip, and then a source matte clip.
3. Click Exit Clip Select to return to the Batch Paint menu.

   In the Sources list, the source is added. In the schematic, the process tree is updated: a source node with the selected clips is connected to the Paint node.

   
   

4. To help identify source nodes in the schematic, select a source in the Sources list to automatically highlight in orange the corresponding source node and link to the Paint node. Conversely, selecting a source node also highlights the corresponding source in the Sources list.

   
   

To add a source node only:

1. Hold Ctrl and click Add to add a source node.

   The source node is added and connected to the Paint node.

   
   

   (a) Source node  (b) Paint node  

2. Connect clips or process tree input to the source node's front and matte inputs.