Formatting a Text Box
The Text Box Tool, part of the drawing comments on the Comment and Markup Tools toolbar, allows you to draw, well, a box with text in it. At first glance it’s not immediately obvious that you have full control over the formatting of the text in it, as well as the box it’s in. But you do, actually. This applies to Acrobat 8 and earlier.
To format the text, select what you want changed, then press Ctrl+E (Windows) or Cmd+E (Mac). That will open Acrobat’s Properties Bar. From here you can choose font, weight, color, size, alignment, underline, strikethrough and super-/subscript attributes.
To format the box itself, click on the border to select the box (you’ll see the corner grab handles) then right-/ctrl-click and choose Properties… Or you can use the Properties Bar again: it’s context sensitive, and clicking on the box border will now give you the options to set fill and border color, line style, and opacity.
The Properties Bar comes to life during other tasks in Acrobat. I’ll let you discover those on your own.