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This task describes the overall process of creating, designing, and deploying a toolkit support set using Extensibility Accelerator.
Create a new extensibility project, or open an existing one:
To open an existing project, select File > Open > Project/Solution and browse to the .weproj project file.
To create a new empty project, select File > New > Project, and use the Web Add-in Extensibility template available in the New Project dialog box that opens.
In the project name, use only English letters, numeric characters, or hyphens.
To import an existing toolkit support set and create a new extensibility project, select File > Import Toolkit Support Set. For details, see How to Import an Existing Toolkit Support Set.
Note: You can have only one project open at a time.
You can practice developing support for a custom toolkit by performing the tutorial. For details, see Tutorial: Create Support For a Custom Web Control Using Extensibility Accelerator.