# AutoFillRect (System API) **AutoFillRect** describes the rectangle used for AutoFill. > **NOTE** > > The initial APIs of this module are supported since API version 12. Newly added APIs will be marked with a superscript to indicate their earliest API version. > The APIs provided by this module are system APIs. > The APIs of this module can be used only in the stage model. ## Attributes **System capability**: SystemCapability.Ability.AbilityRuntime.AbilityCore | Name | Type | Mandatory| Description | | ------ | ------ | ---- | ---------------------------------------- | | left | number | Yes | Distance between the AutoFill form or page node and the left boundary of the page.| | top | number | Yes | Distance between the AutoFill form or page node and the upper boundary of the page.| | height | number | Yes | Height of the AutoFill form or page node. | | width | number | Yes | Width of the AutoFill form or page node. |