An event is the abstraction of an incident in the domain that tells us that something has happened. 
- event parameter
An event parameter is a data item passed along with an event. 
- Executable UML model compiler
An Executable UML model compiler compiles an Executable UML model into a runnable implementation. 
- execution trace
An execution trace is a sequence of procedures and signals that occurs in response to the arrival of a particular signal when the objects are in specific states and their attributes have specific values.