Effects and Tools Reference > Logic Op >

# Logic Op Menu Settings

## General Settings

Logical Operations box
  Select the logical operation you want to use to combine the source images.

Swap Inputs button
  Enable to switch the ordering of the front and back inputs.

Transparency field
  Displays the percentage of the back clip that is used in the operation. Editable.

Clamp Render box
  Select a clamping option for colour and luminance values on output in the 16-bit floating point rendering pipeline.