A method for describing a process flow includes receiving a first root-independent building block and a second root-independent building block, receiving assembly instructions for assembling the first building block and the second building block to describe the process flow, and linking the first building block to the second building block in accordance with the assembly instructions. A user interface may be deployed to a user of the virtual universe which enables the user to report a fraudulent activity of a virtual entity. In one aspect of the invention, a technique for processing one or more user entries associated with one or more events of interest includes the following stepsoperations. The coke is also effective as an extender, and the slurries and set cements have low specific gravity. The presently disclosed invention does not require pre-sorting of the heterogeneous waste and is operative to process \u201cas is\u201d waste.