This part of an instruction is optional. Specific parameters These parameters depend on the instruction and may have different syntaxes. They will be described for each instruction later on. This part of an instruction allows you to select fields in the data. You need of course to know exactly how the data are usually displayed to be able to select the right fields.
Templates are available for each data type.
As many subfield as you want can be defined. Text should be within quotes. The order can be modified and fields can overlap. Each field is defined by its position pos and its length lg . Don't use this instruction element if you want the whole data.