| Name | Script Name | Type | Description | Supports None | Default | Minimum | Maximum |
| Source Image Index | SourceImage | Integer | Index of open source image relative to active image in the order they were opened (0 refers to the active image) | No | 0 | -65535 | 65535 |
| Alpha Index | AlphaIndex | Integer | Index of alpha channel layer in document | Yes | 0 | 0 | 0 |
| Alpha Name | AlphaName | String | Name of alpha channel layer to load as selection | Yes | | | |
| Operation | SelectionOperation | Enumeration (SelectionOperation) | Specifies if new selection should be added to, removed from current, or if new selection should replace previous selection | No | Replace | | |
| Upper Left | UpperLeft | Enumeration (Boolean) | Positions selection in upper left corner of canvas | No | False | | |
| Clip To Canvas | ClipToCanvas | Enumeration (Boolean) | Clips loaded image data to canvas | No | False | | |
| Invert | Invert | Enumeration (Boolean) | Determines if the source image data is to be inverted | No | False | | |
| General Settings | GeneralSettings | Parameter Repository | Contains parameters that control the execution of the command. | No |
