Click on the page where you want to add text and start typing.

Click on the text you want to edit. A bounding box will appear around the line or paragraph. Type your changes directly into the box.

In the early 2000s, the "Multi-" edition of Adobe Acrobat 7 Professional

If you have a legitimate license key for Adobe Acrobat 7 Professional -Multi- (often found on old installation CDs), here is how to resurrect it:

Before SharePoint and Google Docs, Acrobat 7 Pro introduced the Review Tracker. It allowed teams to share PDF reviews via network folders or email. The "-Multi-" version was essential here, as it allowed a Japanese designer to comment on a French engineer’s CAD-exported PDF without character corruption.

The most common way to add new text in this older version is through the or Text Box tools: