A PLCBKL is a PLC that contains only CPs and no additional data. It is thus equivalent to a PlcfBkl. Each CP in the PLCBKL that is not the last CP represents the character position marking the first character beyond the end of a bookmark in a Document Part. Additional constraints upon the CPs inside a PLCBKL can be found in the specification of PLCBKF.
aCP (variable): An array of CPs, each indicating the first character beyond the end of a bookmark in the document.