Like many words in software development, “command” is rather overloaded. In the context I’m using it here, it is an object that encapsulates a request, following the command pattern in Design Patterns [gof]. When I use “command” in this sense, I use “command object” to set the context, and “command” afterwards. The word “command” is also used in the command-query separation principle [mf-cqs], where a command is an object method that changes observable state. I’ve always tried to avoid using command in that sense, preferring “modifier” or “mutator.”
