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.
Golf Club Types. The upper limit to the number of golf clubs a player may carry is 14. Since there are over 40 different possible clubs a player can select from, what 14 clubs to assemble can be a difficult decision for novice and veteran players alike. Depending on how closely they follow the rules, many players carry additional clubs.