short running foot line of no more than 40 characters是什么意思?

8.x05A running head.Some journals request a short running head or footline,usually no more than 40 characters (including letters and spaces) at the foot of the title page.Running heads are published in most journals,but are also sometimes used within the editorial office for filing and locating manuscripts.
是对文章标题页的要求,
要求标题或页脚包括字符和空格不超过40个字.