Hi !
Some time ago i removed all default safezones and created new ones for my server, i can say for sure that safezones are entirely serverside, client is only displaying if you entered one or not when the server tells it to do so... they are controled by the region.sev file...the client region.clt is only used for displaying area names, the background music and day / night sound effects...you can modify it as much as you want but the only thing you will get is not working area names and background music.
Changing cooldown times in clientside is also useless since the cooldown is controled by the server. If you open your character in xml mode, scroll down a bit and you will find the following line :
Code:
<variable name="coolingtime" type="Octets">ffffffff00000000</variable>
this line stores the cooldown from items and skills, in my example there is currently no cooldown active.
PPls would have abused those bugs a long, long time ago since elements editors are compatible with the official clientfiles for a long time and everyone can use a text editor to edit the client .clt files.