References
⌊Gilb2005⌋ ⌊BITS2020⌋
System functions define WHAT a system is expected (or required) to do. A function is expressed with a verb and a noun. Something the system CAN DO.
Examples: boil water; transport people; tell time; guide fluid; filter water; block debris; show information; produce images; transform light; carry goods; hold fluid;
A System Function is not to be confused with a System Requirement.
