# CreateBoundary Method

## Description

Creates an Item from the boundary of the current open **Item**.

## Syntax

Visual Basic |
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Public Function CreateBoundary() As Integer |

## Remarks

The boundary of an **Item** is always 1 dimension less than the **Item** itself.

For example:

- The boundary of a Polygon item (which is 2-dimensional) is a LineString item.
- The boundary of a
**LineString**item (which is 1-dimensional) is two Point Items (the start and end point of the**LineString**). - The boundary of a
**Point**item (which is 0-dimensional) is nothing.

If a Group is open, then graphics are added to the **Group**, otherwise a new **Item** is created.

** Available:** GEO OD SISpy

*Group:*

## Example

*sis.*CreateBoundary()