---
title: "IBaseSurfacesDefinition Interface"
canonical: https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibasesurfacesdefinition.htm
archived: true
applies_to:
  - product: "Customer's Canvas On-Premises"
  - product: "Design Editor"
    versions: ["6.15.0", "6.x (may differ)"]
---

**You’re viewing outdated documentation.** [View the latest Customer’s Canvas On-Premises documentation](https://customerscanvas.com/docs/on-premises/).

# IBaseSurfacesDefinition Interface

**Applies to:** Customer's Canvas On-Premises; Design Editor 6.15.0, 6.x (may differ) · **Archived documentation**
 
A structure holding basic features of multipage templates.
  
 - example
     - ```
const productDefinition = {
    surfaces: {
        // Get surfaces from a folder containing three PSD templates.
        designFolder: "BookCover",
        // Name the surfaces.
        names: ["Front cover", "Endpapers", "Back cover"]
    }
};
```
 
## Properties
 
### Optional bgFoldingMode
 
bgFoldingMode: [IBgFoldingModeParams](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibgfoldingmodeparams.htm.md)

Inherited from [IBaseSurfaceDefinition](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibasesurfacedefinition.htm.md).[bgFoldingMode](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibasesurfacedefinition.htm.md)

Parameters of the background folding mode.
 
### Optional foldingLines
 
foldingLines: [IFoldingLine](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ifoldingline.htm.md) []

Inherited from [IBaseSurfaceDefinition](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibasesurfacedefinition.htm.md).[foldingLines](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibasesurfacedefinition.htm.md)

A collection of folding lines defined in the surface (page).
 
### Optional name
 
name: string

Inherited from [IModelComponent](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.imodelcomponent.htm.md).[name](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.imodelcomponent.htm.md)

A name of a surface (a page) in the product.
 
### Optional names
 
names: string []

An array of surface names. The number of array elements must match the number of surfaces. Otherwise, the default page captions appear in the Bottom toolbar.
 
### Optional proofImage
 
proofImage: [IProofImage](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.iproofimage.htm.md)

Inherited from [IBaseSurfaceDefinition](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibasesurfacedefinition.htm.md).[proofImage](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibasesurfacedefinition.htm.md)

Settings of proof images.
 
### Optional spines
 
spines: [ISpine](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ispine.htm.md) []

Inherited from [IBaseSurfaceDefinition](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibasesurfacedefinition.htm.md).[spines](https://customerscanvas.com/docs/cc6/customerscanvas.iframeapi.objectmodel.ibasesurfacedefinition.htm.md)

A collection of spines defined in the surface (page).