Customizing revision marks
Choose Tools -> Options and click the Track Changes tab.
Alternatively, right-click the TRK box in the status bar and select Options to open the Track Changes dialog box.
Insertions - Lets you choose how inserted text should be marked: under lined, shown only with a color, bold, italic, double-underlined, or shown with a strikethrough. You can also select the color to be used for the insertion. By default it's set to By Author, meaning Word selects a different color for each reviewer.
Deletions - Lets you choose how deleted text should be marked. In addition to the methods explained earlier, you can also have Word hide the text or replace the text with a # or ^ symbol.
Formatting - Lets you choose how Formatting changes should be indicated.
Changed Lines - Enables you to tell Word where to place the vertical line indicating a change - on the left border, the right border, or the outside border . . . or to omit them altogether.
Comments Color - Enables you to define how Word should color comments - different colors for each person entering comments or a specific color for all of them.
Use Balloons Mode - Enables you to define the manner in which balloons are handled - whether or not to use them at all and whether to display them for insertions and deletions.
Preferred Width - Lets you define the width of the balloons. Remember that balloons take up room in the margin, and Word has to "squeeze" the document to make room.
Measure In - Lets you choose the units used for measuring the balloon width.
Margin - Lets you choose which margin Word should place the balloons in.
Show Lines Connecting to Text - Lets you choose to have lines drawn from the balloons to the point in the text that they relate to.
Paper Orientation - Affects how the document prints with balloons displayed. You can force Word to print the document in landscape orientation, to print in the mode for which the document is set up, or to automatically select the most appropriate. (Note that this doesn't affect how the document appears in Print Preview, only how it prints.)