Breaking information into manageable chunks

In the NEXTSTEP User's Guide, how-to steps provide the bare bones "how do I do this," body text and illustrations provide context and details, cross-references are set apart in the lower margin where they don't interrupt the main discussion, and information that's not immediately part of a task is set apart in a sidebar.

Bare bones How-to steps Body text providing context, details, and illustrations
Stand-alone cross-references Sidebar containing information peripheral to the task