Adobe® Acrobat® 9 Professional software is the advanced way for business professionals to create, combine, control, and deliver more secure, high-quality Adobe PDF documents for easy, more secure distribution, collaboration, and data collection. Assemble electronic or paper files - even Web sites, engineering drawings, and e-mail - into reliable PDF documents that are easy to share with others using free Adobe Reader® software. Manage document reviews, synthesizing feedback from multiple reviewers while preserving document format and integrity. Extend commenting capabilities to anyone using Adobe Reader. Windows users can design intelligent Adobe PDF forms that include business logic, such as calculations and data validations, to help increase the accuracy of data collection while reducing the costs of manual data entry.