Among other disclosed subject matter, a computer-implemented method for animating an image element includes determining that a trigger element defined by a trigger element occurs. The system includes a platform-independent communication system for enabling communication between object instances executing at service nodes in the intelligent network. The first and second surfaces may be arranged to define a step. A dispensing head is located above the housing with outlet passages extending from the motors to the dispensing head defining a path to the dispensing head which is continuously upward. Therapeutic methods for treating breast, lung, colon, brain, and ovary cancers using the hydrolase-like molecules are described.