Function Keys Not Working in WC-NaW v. 3.1

[gaggle44]

I've just reinstalled NAW on a fairly new Windows 10 desktop and updated it to v. 3.1.  
Am stumbling about trying to get a feel for the controls.  One problem seems to have emerged early.
The manual's discussion of the keyboard interface indicates that the F1, F4, F8, and F12  
have significant roles in controlling the game.  However, these keys are not
responsive at all when I attempt to use them during a scenario. 

What am I missing?

[williammiller]

Hello - what keyboard layout are you using (US, UK, etc)?

[gaggle44]

I'm using a US layout, a Microsoft "natural" keyboard. Game seems to be functional on
my new computer (HP Pavilion, purchased just last year) except for the specified
"F" keys. But I've just begun to work my way through the online manual after
long absence.

[williammiller]

Check your keyboard manual to make sure there is no 'alternate-function-keys' or 'lock-function-keys' setting that might be active, off-hand that's the only obvious thing I can think of that would cause those keys to not register in the NAW game.