API - application program interface. Related Terms. Application program interface (API) is a set of routines, protocols, and tools for building software applications. An API specifies how software components should interact. Additionally, APIs are used when programming graphical user interface (GUI) components. A good API makes it easier to develop a program by providing all the building blocks.
By Rowena Pedrena. A traditional golf set has 13 clubs: three woods, nine irons (including three wedges) and one putter. The USGA limits the number of clubs a player may carry in his or her bag to 14. A player may include an additional wedge or wood to a fill a gap in hitting distance.
A standard set consists of 14 golf clubs, and while there are traditional combinations sold at retail as matched sets, players are free to use any combination of 14 or fewer legal clubs. An important variation in different clubs is loft, or the angle between the club's face and the vertical plane.