On 17 Aug 2023, Bj”rn Wiberg said the following...
 
 BW> Hello Christian!
 BW> 
 BW> On 17 Aug 2023, Christian Sacks said the following...
 BW>  
 BW>  CS>  CS> I think I did try adjusting that one, but became under the impre
 BW>  CS>  CS> that was for the listing of bases rather than listing of message
 BW>  CS>  CS> a base, but I could be wrong. Will have another look at that and
 BW>  CS>  CS> it goes.
 BW> 
 BW> Check out themes/default/text/ansimlst.ans -- could that be the one
 BW> you're after? With !1, !2 and !3 being the "variables".
 BW> 

That is the ansi file that sets up the page, but that's all ok for me, it's what is processed between the !1 and !2 etc.
That has a customisable (should have) .ini file like the one for the file/message base lister.

... Back up my hard drive? I can't find the reverse switch!

--- Mystic BBS v1.12 A48 2022/07/15 (Linux/64)