HLLs give us the ability to make use of abstraction to build algorithms in a close-to-English representation HLLs are shipped with application programming interfaces (APIs) that contain useful tools and objects to help program them for their purpose

There are criteria that are used for selecting the proper HLL for the required tasks. These can include scalability, cost, flexibility, efficiency, portability, and maintainability

interface — construct which resembles a class definition but contains only methods which are constructed as abstract methods. abstraction — way of thinking and expressing algorithms to indicate what the programmer wants the hardware to do. busy waiting — condition of a process that is continually looking to see if it has access to a critical section, taking processor time from all processes. tokens — front-end compilation product that are sequences of compiler recognizable atomic symbols which make it much easier for the next steps to recognize them.