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Use the following instructions to make comments in PDF documents with the Highlighter tool.
Step 1

Click the Comment tab in the upper right corner to open up the pull-down menu.

Comment tab
Step 2

Click the Highlight Text icon.

Highlight Text
Step 3

Select the text you want to highlight and
right-click Open Pop-Up Note to place a note
on that text.

Open Pop-Up Note
Step 4

To spell-check your comments, highlight the word(s) and right-click to check spelling.

Step 5

To reply to previous comments, right-click the highlighted text and select Reply.