The help system is your friend. It sounds like you are mistakenly quoting the wrong file. Here is the one for parry:
Code:
[Skills help] parry
Automatic
The first line of defense for the well-trained swordsmen is the parry. A
parry is used to block an opponent's weapon with your own weapon. If either
you or your opponent are not using a weapon, you will not be able to parry.
The accuracy of both weapons modifies the chances of a successful parry.
Some types of weapons are unparryable. These include any kind of hand-to-hand
combat style, natural weapon attacks from many non-humanoids, any kind of flail
or whip and certain other exotic weapons. While this is advantageous to the
attacker, these weapons are also impossible to use to parry incoming attacks.
See also: brawling 'enhanced parry' 'self defense' 'wild fighting'
And here is the one for disarm that you appear to be paraphrasing:
Code:
[Skills help] disarm
Syntax: disarm <victim>
The disarm skill allows a warrior to attempt to knock an opponent's weapon
out of his hands. While there is nothing stopping someone from picking
up their weapon again, the weapon's speed determines how long it will take to
resume a proper weapon stance after re-arming. It's generally impossible to
disarm unless you are wielding a weapon, although there are some groups and
creatures whose bare hands count as weapons.
There are a variety of modifiers that affect the success of a disarm attempt,
including both parties skills with the weapons involved, the accuracy of those
weapons, and relative strength and dexterity. Certain types of weapons provide
additional bonuses or penalties on a disarm check. Unparryable weapons provide
a bonus to disarm attempts while two-handed weapons provide a better defense.
See also: weapons finesse