How to Switch Between Drawing and Modeling in NX Viewer.
Solution
Switching to a drawing view is done by double clicking on the "Sheet" under the Drawing folder in the Part Navigator.
Switching to a modeling view requires the user to select 'View -> Layout -> Open -> (select) "L1 - Single View" -> OK (or double click).'
Notes and References
Hardware/Software Configuration
Platform: INTL64
OS: window
OS Version: 10_1709
Product: NX
Application: ARCHITECTURE
Version: V12.0.2
Function: NX_VIEWER
Ref: 001-6768528