Options: to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs., to build a literal table and an identifier table, to build a uniform symbol table, to parse the source program into the basic elements or tokens of the language.
Options: (A)The low-level components of a system are integrated and tested before the higher-level components have been developed (B) The testing process starts with modules at lower levels in the hierarchy and works up the hierarchy of modules until the final module is tested. (C) An event driven control system, where an event is broadcasted to each subsystem and any sub-system that can handle that event responds to it. (D) Control starts of the top of a sub routine hierarchy and through sub routine calls passes to lower levels. 13