A bookmark is a location or selected text that is identified and named for future reference. For example, you can use bookmarks to identify text that needs to be revised later. Using the bookmark dialog box eliminates the need to scroll up and down in the document to locate the text.

Select the item for which you want to specify a bookmark, or click the location where you want to insert a bookmark.

Click Bookmarks on the Insert menu.

Under Book Signature, type or select a book signature.

The book signature must start with a letter and can contain numbers, but not spaces. You can use underscore characters to separate words, for example, "Title _ 1".

Click the "Add" button.

When you say for a catalog, it's not a bookmark, it's called style and format. For example, chapters and sections can be set to the title 1 and the title 2 respectively, and then they can be seen in the view/document structure diagram.

The specific method is to select "Chapter 1 ..." (one line) and click Format/Style and Format/Title 1. ..

As for the full text, you can use the format brush to set the rest of the chapters uniformly, and the title 2 is analogized.

Finally, create a directory.