mission.commands problem - F10 NEXT, F11 PREVIOUS * F12 EXIT not automatically provided?

[TEMPEST.114]

I'm giving players choices from my script that populates a sub menu in the F10 radio menu.

However in some circumstances I have more that 12 items to present. I had **thought** that the underlying system would automatically parse this list and add the generic 'F10 - NEXT' & 'F11 - PREVIOUS' and 'F12 - EXIT' menu options to span them over 'two' pages, but this isn't happening. 

I also haven't found a way that shows that this is handled automatically like I thought. 

So am I right and I have to do that myself? 

Edited November 13, 2022 by Elphaba