The second set of flags controls the level of stripping to be performed on the deployment image; there is a trade-off between image size, and retaining functionality which is required by the application:
Advanced deploy options There are some flags which may reduce deployed application size in trivial or specialized applications. These settings cannot usually be changed from their defaults and still produce a working application. These settings are not available from the deploy tool UI and must be set by manually editing a vocabulary's deploy.factor file.