| Name | Script Name | Type | Description | Supports None | Default | Minimum | Maximum |
| All_Channels | AllChannels | Enumeration (Boolean) | Apply to all channels | No | False | | |
| Bias | Bias | Integer | Amount to add | No | 0 | -255 | 255 |
| Channel1 | Channel1 | Integer | Channel for image 1 | No | 0 | 0 | 2 |
| Channel2 | Channel2 | Integer | Channel for image 2 | No | 0 | 0 | 2 |
| Clip_Color_Values | ClipColorValues | Enumeration (Boolean) | Clip color values | No | True | | |
| Divisor | Divisor | Integer | Divisor | No | 1 | 1 | 255 |
| Function | Function | Enumeration (ArithmeticFunctions) | Arithmetic function | No | Add | | |
| Image1 | SourceImage1 | Integer | Index of source image 1 in open order relative to active document | No | 0 | -65535 | 65535 |
| Image2 | SourceImage2 | Integer | Index of source image 2 in open order relative to active document | No | 0 | -65535 | 65535 |
| General Settings | GeneralSettings | Parameter Repository | Contains parameters that control the execution of the command. | No |
