A typical approach to distributing files for almost everyone has been via Adobe Acrobat and the Adobe Readers. It is a rare computer user who doesn't have some version of Adobe.
Bentley has included the ability to write PDF files from MicroStation, and added the ability to move both animation and the ability to fly through buildings and over geography within the PDF file. Try several examples but be sure you have the latest version of Adobe Reader, 7.0.
While there are some limitations relative to layer control and selecting what you can see, there is a tool bar that lets you select or hide areas, and even choose from a list of pre-defined views.
From left to right, the icons represent: Rotate, Walk (as in Walk through), Pan, Zoom, Pause Animation, Enable Extra Lighting, Background Color, Select, Show, Hide and Isolate.
There is also a list of more expansive options that you can activate with a right click on the drawing.
Just remember this is a viewing tool and it is not designed for mark-up or redlining. It fills a niche between a simple screen shot and tools like AutoVue Professional, Volo Viewer or DWF composer. At the same time, it is fairly robust as a viewing tool, as it allows you to view and traverse a 3D drawing and see animation. There is no cost to the user, and virtually no training. Note that the PDF file, when created, will support comments and attachments.
This is a different approach to providing files that can be seen in a universal viewer. As Bentley and Adobe extend the functionality, this medium will become a standard in distributing files that are no longer static, but are both dynamic and interactive.

