Runtime packages are deployed with your applications. They provide functionality when a user runs the application. 

To run an application that uses packages, a computer must have both the application's executable file and all the packages (.bpl files) that the application uses. The .bpl files must be on the system path for an application to use them. When you deploy an application, you must make sure that users have correct versions of any required .bpls.

• Loading packages in an application
• Deciding which runtime packages to use
• Custom packages