In previous versions of the Creative Suite, you had to use Adobe Acrobat to add interactive form elements to a PDF, even if you created the PDF in InDesign. In CS6, you can use the new Buttons And Forms panel to create a text field, radio button, check box, combo box (popup menu), or signature field, as well as buttons for printing, submitting the form by email, and clearing the form. InDesign includes several button designs, or you can convert your own objects into buttons.

You can even include tooltips, set the tab order for form fields, and show and hide form fields based on triggers, such as responses to other questions on the form.

The tab order in a PDF file determines which form field, article, or other content is selected next when you press the Tab key on your keyboard. When a document is read aloud by an application with accessibility features, the application follows the reading order; if you tab to a different area of the document, it’s highlighted as it’s read.

Adobe also added the ability to export your PDF from InDesign in grayscale, which reduces file size and complexity when printing with only black ink, gives you the choice to export each spread as a page (as in earlier versions) or to split the spreads into individual pages.

To help you visualize what your layout will look like in grayscale, the View -> Proof Colors command now includes grayscale options to preview a job in black and white.