BW> On my system, when entering the (I)ndexed File Lister, hitting Ctrl+Z
 BW> for help and then any key, I get a more prompt.

Did you edit it or set your screen size to something smaller than 24?  The default file has 23 lines in it but if you open it and resave it in an editor sometimes it will save as a 25 line or larger image even when the screen size is smaller.  Or if you are logging in with less than 24 lines per screen of course it should be pausing in that case.

--- Mystic BBS v1.12 A47 2021/07/31 (Windows/64)