How to make a PDF bookmark always open

　　A friend in the production of a PDF file, made a bookmark, save and then open, must point to bookmark, the bookmark will open. But some PDF files, bookmarks Bar is always open, as long as one open PDF file, bookmarks Bar is open, very intuitive to see the directory. So how do you show a bookmark when you open a PDF?

In Adobe Acrobat, it is possible to set the bookmark for a PDF to always open.

Take Adobe Acrobat 8 Professional as an example:

1, in Adobe Acrobat, open your PDF file;

2, "File"---"Properties" on the menu, open the document properties form;

3, continue to point to the "Initial view" tab, and look at the following "layout and magnification" under the "Navigation tag";

4, if you want the bookmark to be open initially, click "Bookmarks Panel and page" or "page panel and page", and you will see the other settings depending on the situation. There's no need to change. Then "OK", save, exit.

Open again to see if the PDF bookmark is always open.