A dual-use product is configured for use as a piece of body jewelry and as a smoking pipe. The system achieves this by organizing the content in these materials and programs into learning targets and ordering the learning targets to reflect the pre-cursorpost-cursor relationships among the learning targets. In response to the user input, a graphical program that implements the specified functionality may be programmatically generated. A client may also request a write lease which allows an application on the client to modify the directory metadata, such as by creating or deleting new files in the directory, or changing their attributes, and cache those changes. In order to provide a connection means for a jump-start device in a simple and cost-effective way, it is proposed that the motor vehicle power conductor is formed in one area as a jump-start connection point.