This file defines names of states (like death, poisoned etc....) that are shown in the game message window.
The first column consists of number of the effect, tested it with some effects like slow (40) and Charm Specific Creature (5) and others.
Second column is as it is said - the effect description without effect on game - just for information.
Third column consists of the strref with the name of this effect that is shown in game.

In PSTEE we have:

2DA V1.0
-1
        EFFECT_NAME     STRREF
25      POISON          106749
13      DEATH           106750
134     PETRIFICATION   106751
12      DAMAGE          106752
39      SLEEP           106753
68      UNSUMMON        106754