Version XI introduced several significant upgrades to the free reader that were previously reserved for paid versions:
Integrated with Adobe EchoSign, allowing users to sign documents and send them for signatures electronically. System Requirements for Adobe Reader XI
Features a "Protected Mode" (sandboxing) to isolate the application and protect the host system from potentially malicious PDF files.
Adobe — Acrobat Reader Xi 11.0.23 Portable Download
Version XI introduced several significant upgrades to the free reader that were previously reserved for paid versions:
Integrated with Adobe EchoSign, allowing users to sign documents and send them for signatures electronically. System Requirements for Adobe Reader XI adobe acrobat reader xi 11.0.23 download
Features a "Protected Mode" (sandboxing) to isolate the application and protect the host system from potentially malicious PDF files. Version XI introduced several significant upgrades to the