Keys define items that vary each time an application in a project is run. They may represent a file, number, character string, or Boolean flag. They are assigned values by scenario.

All the available keys in a project, system and application keys, are listed in the Key Manager section in the model tab in Project Explorer. The Key Manager section allows to organize existing keys under user created categories or colors, as well as add, remove, duplicate and rename those categories and keys.

You can edit a Key's definition by opening the Key Definition Editor, which can be accessed through the Key Manager context menu or by double-clicking on the desired key. (see Editing keys for more information about the Key Definition Editor and check the tutorial Working with Scenario keys for information on how to set up your keys)