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2.3. Comments on PDF files: How to make comments

There are two great reasons we prefer to use PDFs for sharing documents via email.  

1.   PDFs do not carry viruses!

2.   PDFs are not editable by everyone as a Word document is.   

So you receive a PDF file of the latest paper.  However, there are some comments you wish to make about this document.   Yes, you could just respond and describe your comments in the body of the email.   But let's make this easier!

View the PDF using Preview (if it doesn't automatically open the document in Preview, open it from the Applications folder).  Choose the Tool Mode Selector on the top right of the Preview window (as shown in the example with the red arrow).   In this drop-down menu, you have two modes.  One is the Annotate Text tool and the other is the Oval mode.   I have used both as an example in the screenshot below.