# Saving crosscutting information

To save the crosscutting information for a project:

1. Select the project in the Package Explorer.
2. Right click and select AspectJ Tools > Save Crosscutting Map... from the context menu.
3. Enter a name for the crosscutting map file in the dialog, and click OK.

Crosscutting map files have an extension of ".ajmap".

Comparing two builds
Comparing with the current build