Classic EQ Stat disclosure
 

When EQ launched in 1999, the way things like resists worked, mana and other things were hidden. What I mean is that like HP, you never knew how much mana you had or if you had X resists, how likely it was that a spell would land/not land. You could always cast a 20m spell x times to find out how much mana you had, but it seems like the devs either did not want you to know these things or simply forgot/did not have time to add them.

For example, in Diablo, when I leveled and put points into something or added gear with +stats, you could tell immediately what effect those stats had on your character.

Is there even early code that exists which could explain how things worked in classic?

Prolly not as long as were using titanium