| Name | Description | 
Channel | Functions to operate on Channels and Destination | 
Cluster | Functions to operate on the cluster | 
Collections | Collections functions | 
Date | Utility Functions to Operate on DateTime Properties as Dates without Time | 
DateTime | Utility Functions to Operate on DateTime Properties | 
Engine | Functions to get information about the Engine. | 
Event | Functions to operate on Events | 
Exception | Functions to create and modify instances of type Exception | 
File | Functions to support general file IO operations | 
HTTP | HTTP Client functions | 
Instance | Functions to create and modify instances of type Concept | 
Log | Can be used to perform logging from rules/rule functions. | 
Math | Utility Math Functions | 
Number | Utility Functions to Operate on Integer, Long Properties | 
SOAP | SOAP Helper functions | 
String | Utility Functions to Operate on String and Char Properties | 
System | System Wide Functions | 
Temporal |  | 
Util |  | 
VRF | Utility Functions to Operate on Virtual Rule Functions | 
XPath | This category provides list of xpath functions to operate on the event payload |