NAV-1 provides executive-level summary information in a consistent form that allows quick reference and comparison among architectures. NAV-1 includes assumptions, constraints, and limitations that may affect high-level decision processes involving the architecture.

This information included in this subview also includes the Eenterrpise Phases of the architecture.

The information included in this chapter also includes Libraries (see "The NAV-1 Library Organization Chapter") and Timelines.

A timeline is used to create one or more calendars for the overall architecture, with dates and events that are common to everyone in the organization. These calendars can then be linked to Master Plans of the architecture to benefit from the timespots defined in the timelines. For more information on timelines, see the HOPEX Planning user guide, "Describing a Master Plan" chapter, "Using Timelines" paragraph.