The API compare wizard can be used to compare a selected set of selected elements (projects, source folders, package fragments, or compilation units) to a selected API baseline and show those results in the API Tools View
| Option | Description | Default | 
|---|---|---|
| Baseline | You can choose any API baseline from the combo box to compare to. | Default baseline or empty | 
| Add New Baseline | Opens the API Baselines preference page so that a new baseline can be added for use. | 
The API Compare wizard, showing an example Eclipse 3.4.1 baseline being compared to.
