 All races must be started by the report of the starter 's gun or approved starting apparatus fired upwards after they have ascertained that athletes are steady and in the correct starting position . An athlete may not touch either the start line or the ground in front of it with their hands or feet when on their marks . 
 All races must be started by the report of the starter <a href='null_genetive' title='1'><mark>'s</mark></a>gun or approved starting apparatus fired upwards after they <a href='been_done' title='2'><mark>have</mark></a> ascertained that athletes are steady and in the correct starting position . An athlete may not touch either <a href='None' title='3'><mark>the</mark></a>start <a href='negative_concord' title='4'><mark>line</mark></a> or the ground in <a href='negative_concord' title='5'><mark>front</mark></a> of it with their hands or feet when on their marks . 
All races must b started by da report of the starter  gun or approved starting apparatus fired upwards after they done ascertained dat athletes are steady and in the correct starting position . An athlete may not touch either start no line or tdaground in no front of it with their hands or feet when on their marks .