The Text Box tool is useful for placing text notes and comments on the PDF. Text is contained within a text box you define, including its size, background color, and other properties.
Creating a Text Box Markup
Text > Text Box. on the Resizing or Adjusting a Text Box Markup
Select a markup to reveal its control handles. Each handle controls a different aspect of the markup's size and orientation.
To rotate the markup, click and drag the orange handle outside the markup (when the markup is first placed, it will be at the top). By default, the markup is rotated in increments of 15°; to rotate in increments of 1°, hold down SHIFT while dragging.
The rotation can also be entered in the Rotation field found in the Layout section of the Properties tab.
To resize the markup, click and drag the appropriate yellow handle.
To autosize the text box so that it fits the text, select the markup and press ALT+Z.
See Editing Markups for more information.
Adding an Action to a Text Box Markup
You can add an action to nearly any markup. Simply right-click the markup and select Edit Action to open the Action dialog box.
Changing a Text Box's Appearance
Appearance of the text is configurable, including settings for the font as well as the box in which the text is formatted. Examples include:
The default setting for this tool is red text with no fill color.
There are two ways to change the default settings of a tool:
The entire contents of a text box can be selected by clicking the text box. Once it has been selected, changing any of the font formatting options will apply to all text within the box.
To select particular words in a text box, click the box to make it active, then click and drag over the desired text. Any formatting you change in the Properties tab will only affect the selected text.
To change the appearance of a text box and its text, select it and click the 
Properties tab.
Tabs > Properties or press ALT+P to show the Properties tab if it is hidden.
Appearance Properties
The Appearance section of the Properties tab contains the following options:
Color: Sets the color of the text box and leader line, if any.
Fill Color: Controls the fill color of the text box.
Opacity: Sets transparency level for the text box and the leader line.
Fill Opacity: Sets transparency level (100 = opaque, 0 = completely transparent) for the fill color.
Line Width: Sets the thickness of the line segment in points. If the Line Width is set to 0, it is effectively invisible.
Style: Determines the pattern of the line segment. The Cloud style only affect the text box; the leader line will be solid. Any styles other than Cloud will affect both the text box and the leader line.
Shape: Sets the shape of the text box.
End: This setting is grayed out because it does not apply to text boxes.
Font: Sets the font used for the selected text. Available fonts are divided into three regions:
Note: If you attempt to embed a font for which the viewing and editing permissions do not allow formatting, Revu will display a message indicating the font will not be embedded in the PDF.
Font parameters are retained in the PDF such that even if the original font is not embedded or on the viewer's workstation, a suitable representation of the font will be substituted.
Font Size: Sets the size of the font.
Auto: Automatically adjusts the font size of the text to the maximum value that will fit in the text box.
Line Space: Adjusts the spacing between multi-line rows of text.
Margin: Defines the amount of space between the text characters and the border of the Text Box.
Text Color: Sets the color of text.
Alignment: Defines the alignment of text within the box. The icons represent Left, Center, Right, Top Justified, Middle Justified and Bottom Justified respectively.
The Font Style settings control the formatting of the text. Options include Bold, Italic, Underline, Strikethrough, Superscript and Subscript. Generally, any combination of these styles can be applied to format the text.