Bukkit

The Event Maps are XMLs that are inside the folder EventMaps these XML is possible to determine what the Scripter to do when the event is triggered by Bukkit.

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<EventSetStorage>
    <EventSet>
        <Name>on-blockbreak</Name>
        <Script>block.rb</Script>
        <Method>onBlockBreak</Method>
    </EventSet>
</EventSetStorage>

EventSet

Name:

Name of the event.

The name of the event is always determined by on-{EventName}

example: 
BlockBreakEvent = on-blockbreak 
PlayerDeathEvent = on-playerdeath

Script

Name of Ruby Script file in Scripts Directory

Method

Name of Function or Method

Events List

http://jd.bukkit.org/rb/apidocs/org/bukkit/event/class-use/Event.html