In shooting, the standing position, also known as "offhand", refers to shooting while standing. It is often regarded as the most difficult position. The rules vary depending on the shooting discipline. Generally, one must stand freely, without the aid of a rest or bench. Highpower rifle, smallbore rifle, and silhouette shooting do not permit the use of a sling. The international pistol, shotgun and running target events, as well as 10 metre air rifle, are all fired only in the standing position. 300 metre rifle three positions, 300 metre standard rifle and 50 metre rifle three positions all include standing as the second stage of competition, and the Olympic 50 metre finals are also shot standing.