Specify the appearance of text box comments in your PDF documents by choosing File > Options > Comment.
In the Text Box Default Font area, select a font name, size and an underline style from the drop-down lists. Choose a font color and specify combinations of other text attributes such as Bold, Italic, Superscript, Subscript and Strike through.
In the Text Box Default Align area, choose Left, Center, Right or Justified alignment for your text in comment boxes.
Click Reset Comment Defaults to restore delivery-time settings.
Annotating and Marking up Documents provides a set of links to each comment type. See also Print with comments.
Text Box text properties can be changed by selecting a text box and double-clicking it. A Set button in the Text Box Text Properties dialog box allows changed settings to become defaults for future use.