The cue line is not displayed when switching from 'Full Screen' mode to the 'Ribbon' interface and back again to 'Full Screen'.
Solution
The user can manually enable the cue line using 'Customize ('Ctrl' + '1') - Tabs/Bars - (check) Cue/Status Line'. However, the cue line will only remain visible until the user switches back to the ribbon interface again.
To ensure the cue line remains visible when in Full Screen mode, the 'user.mtx' file can be edited and the value of the "RibbonFullscreen - visibility' parameter set to "1":
<Mode name="RibbonFullscreen" pos="1" visibility="1"/>
The 'user.mtx' file is typically located in:
'C:\Users\<user_name>\AppData\Local\Siemens\NX120'
Notes and References
Hardware/Software Configuration
Platform: INTL64
OS: window
OS Version: 764SP1
Product: NX
Application: SYSENG
Version: V12.0
Function: UI_TOOLS
Ref: 001-7863362