اس کنٹرول میں ترمیم  کرنے سے یہ صفحہ آٹومیٹک طریقے سے اپڈیٹ ہو جائے گا
    
Bookmark PDF pages in Preview on Mac
You can bookmark a page in a PDF so you can return to it later.
- Go to the Preview app  on your Mac. on your Mac.
- Open the PDF you want to bookmark. 
- Do any of the following: - Add a bookmark: Choose Tools > Add Bookmark. 
- View bookmarks: Choose View > Bookmarks. 
- Go to a bookmark: Click the bookmark in the Bookmarks sidebar. 
- Close the Bookmark sidebar: Choose View > Hide Sidebar or View > Thumbnails. 
- Delete a bookmark: Choose View > Bookmarks, Control-click the bookmark in the sidebar, then click Delete.