Subclasses of codice 1 can redefine which class to instantiate. The trigger causes the environment to instantiate a "context object". Particular physical objects merely exemplify or instantiate the universal. Creational patterns are ones that create objects, rather than having to instantiate objects directly. MBean to load, instantiate and register MBeans in a MBeanServer from an XML description. Windows Explorer will instantiate the COM objects as required. To "instantiate" a generic unit, the programmer passes "actual" parameters for each formal. To use a module, just instantiate a class having for name imports. The user can instantiate the class as codice 5. To use the Response class, instantiate it from the middleware layer down the stack. The main idea was to have master drawings which one could instantiate into many duplicates. It is possible to instantiate generic units at run-time, for example inside a loop. Rule-based languages instantiate rules when activated by conditions in a set of data. For example, we may instantiate A7 with formula 155, or with formula 156. Xolotl's association with ollin motion-change suggests proper completions and gestations must instantiate ollin motion-change.