【求助】请问下面投稿须知的意思是什么？

1 Manuscripts should be written in clear, concise form and sent to the Director，Three copies of the manuscripts must be written in English and double-spaced throughout.
2 Each table should be titled, appropriately numbered and typed on a separate sheet.
Units of measurement should be indicated and all abbreviations defined.
3 All the illustrations (graphs, drawings and photographs) should be referred to in the text as Figures. These should be good quality glossy photographs (or original India-ink drawings).
4 Since graphs are generally reduced in size to 8.5 cm, numbers, letters and symbols are to be originally large enough so that, when reduced, they will remain at least 2 mm high to maintain legibility. To avoid reduction, photographs' width should generally not exceed 8.5 cm. When necessary, photographs can be arranged to form a plate of the maximum size of 17 cm (width) x 18 cm (height). Legends to figures should be typed on a separate sheet.
5 Reprints should be ordered when returning the revised proofs and will be charged to the Authors.
不好意思，也不是完全不懂，因为没有经验，就是想再确定一下，谢谢了！