The dictionary allows you to easily browse all the attribute and measure definitions on a project.
You can search for an attribute or measure, view its details and check for its usages within the project.
From version 4.0.0.0 you can also download the project dictionary directly from this page. You can then edit the downloaded file and import it in indyco Builder to merge the informations (read more).
To open the Dictionary View just click on the Dictionary icon in the toolbar while browsing a project.