As a general rule, please also restrict the length of the title to 15 words. Number all pages of the manuscript. The appropriate subject category should be indicated on the title page (see listing below). Be sure to include a short title of less than 50 characters (50 letters and spaces). An abstract should be included on the second page for all Regular Articles and Reviews (200 words or less), and for Notes & Tips (100 words).
为什么前面的文章的题目限制在15个字以内，后面又说包括一个短的题目要少于50个字符？而且题目怎么可能少于50的字符呢？
还有 Notes & Tips 是什么意思？
不好意思，问题有点弱智，但我实在找不到合适的人解答，只有请教各位大侠了。

less than 15 words or 50 characters

我刚遇到类似的情况，希望下面的说明对你有用：
    1。论文的题目应少于15个单词。
    2。a short title of less than 50 characters是指提供论文题目的缩略格式应少于50个字符，这个缩略格式用于除论文首页外的其他页的页眉。例如你的论文title是"Electronic, Energetic, and Chemical Effects of Intrinsic Defects and Fe-Doping of CoAl2O4: A DFT+U Study"，short title 就可能是“Effects of Intrinsic Defects and Fe-Doping of CoAl2O4”。
    3。Notes & Tips应该是指类似于Letter的短论文。

谢谢，很有用，顶一个

受教育了