The level determines when to try to match the Xpath or SHE. The search is started with level1, when it doesn't match, level2 is used and so on. To make the resulting string dependent on more then one Xpath or SHE, you can use sub-levels, ie. if you have level1-1, it is evaluated only when level1 matches. If then level1-1 matches, its result is taken, else the result is determined by level1.
- fetch_content=true, this will get any plain-text-content the found tag encloses or the sip-header content
- fetch_attribute="id", this will get the value of the attribute named "id" which should be present in the identified tag
It is good practice to not include a [Features/XML_Parsing/Xpath|Xpath]] or SHE in the highest level-rule (the one evaluated last). This way one can be sure that it matches 100% and the ParsingRules deliver a result.