Remove the arrow in the hand tool when reading the PDF document)

This article from http://wangqingyun84.blog.163.com/blog/static/7908361720116294711910/

When reading some PDF files, there is an up and down arrow in the middle of the hand tool. After clicking it, it will zoom in and flip pages. If you do not like this function, you can find a solution.
This is related to the so-called "article (Article)" concept.

If a document (PDF document) contains "article (Article)", a down arrow exists in the middle of the hand-shaped cursor by default. When you click the mouse, the page is displayed.

Check whether a document contains "article (Article)". You can choose View> navigation panes> articles (view the Chinese version> navigation bar> articles) to open the articles panel, check whether there is anything in it. If there is no article PDF document, the down arrow in the hand-shaped cursor will not come out in any way.

I don't like this page flip function. You can disable it by adjusting the global settings. The corresponding configuration items of this function are:
Edit-> preference... -> General-> basic tools-> make hand tool read articles
Edit-> preferences-> General-> basic tools-> read Articles Using Hand Tools
If you cancel the check box of this option, you can use the hand-shaped tool to drag it normally. There will be no annoying left click to flip the page.