The biggest improvement in Acrobat XI is that you can fully edit text in PDFs. When you add or delete text, the paragraph it’s in will reflow automatically. (Many PDF editors lack text reflow, resulting in mangled looking paragraphs due to large gaps where you’ve deleted words.) Acrobat XI also lets you change text formatting (bold, italics, underscore) and its font, and the alignment of paragraphs. We found this text editing tool pretty sufficient -- comparable to the basic functions of a standalone text editor. So, if you need to do simple changes, you don’t need to go back to the application, like Word, that you used to create the original document.