User’s Guide : Extending EViews : Add Menu Items and Object Classes
  
Add Menu Items and Object Classes
EViews Add-ins and user objects allow complete customization of your EViews environment, allowing you to add menu items, and define new object classes.
Add-ins are simply EViews programs that are integrated into the EViews menus and command line, allowing you to execute the programs using the menus or by user-defined command. In this regard, any EViews program can be used as the basis of an Add-in.
If you do not wish to create and program your own Add-ins, you may take advantage of them by installing prepackaged Add-ins from the IHS EViews website or from third-parties. Once installed, Add-ins can provide you with user-defined features that are virtually indistinguishable from built-in EViews features.
See “Add-ins” for details.
An EViews user object allows you to create your own object types inside of EViews. A user object may be as simple as a storage container for other EViews objects, or it may be a sophisticated new estimation object defined by multiple EViews programs, with views containing post-estimation tests and results, and procedures producing output from the estimation results.
As with Add-ins, if you do not wish to go to the trouble of creating your own objects, you may still take advantage of this powerful tool by using user objects downloaded from the IHS EViews website or obtained from third-parties.
See “Add-ins”.