In 1887, it was specified that "[t]he ball must at least be rolled over before it shall be considered played".[89] This requirement was made more precise in 1895: the ball "must make a complete circuit or travel the distance of its circumference" before being in play.[90] In 1997, this requirement was eliminated: the ball became in play as soon as it was kicked and moved (and left the penalty area, if necessary; see below).[91] In 2016, it was specified that the ball must "clearly" move.[92]