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.
Three Types of Golf Clubs to Use. The rules of golf allow us to play a round of golf with 14 clubs in our bag, and each one of those clubs has a different purpose and a different use when we're playing out on the golf course. There's three basic categories of clubs that we have in the bag.