004_Constants_replacements.xml replaces a few of the Constants, and adds a few into the game that aren't normally there.  These are pretty standard fare for modders, but I think that would-be game designers should note that I found that changing the hitpoints for player attached equipment and weapons made a *huge* difference on gameplay, and led to a lot of the changes found in Shiparch.ini.

This script can be removed without doing any harm.