Please write a paraphrased version of the given paragraph:
If the corner markings are more than 2 metres apart, intermediate lines 9 cm × 3 cm shall be inserted so that there is no more than 2 metres between adjacent marks.
Where the distance between the corner marks is greater than 2 m, signs 9 cm × 3 cm shall be insertedy between them, such that the distance between the two marks is not more than 2 meters.