Allow Processing Rules to parse and set parsed values.
Similar to what the St. Bernard tool does, allow processing rules to parse a delimited value and set the parsed value into another variable (regular or context).
Example 1: For xxxx_yy_zzzzz, look for the value between the first and second underscore and set that value into prop1. Result: prop1 = yy.
Example 2: For xxxx_yy_zzzzz, look for the value from the beginning of the string until the second underscore and set that value into prop1. Result: prop1 = xxxx_yy.
Yes, basically its regular expressions.
