: This version integrated with Acrobat.com (now Adobe Document Cloud) and EchoSign, allowing users to store files online and send documents for electronic signature.
: Unlike previous versions, XI gave users full access to commenting and markup tools, including sticky notes, highlighter, stamps, and free-form drawings. adobe reader xi 11001
: Users could fill, sign, and save PDF forms locally, a feature previously restricted in some older versions. : This version integrated with Acrobat
Security was a cornerstone of the XI release. Version 11.0.01 continued to refine the "Protected Mode" sandboxing technology: Adobe Help Center End of support for Adobe Acrobat XI and Reader XI including sticky notes
Understanding Adobe Reader XI (11.0.01): Features, Support, and Security