void (_stdcall *InsertElPrio)(LinListH List, void *DataPtr, unsigned int HighPriority);

ListHandle to a linear list.
DataPtrAddress of inserted data that are allocated by call-back function GetMem.
HighPriorityBinary value of priority. If HighPriority = 0, the data is inserted at the end of the list, otherwise at the beginning.

The function inserts an item to the linear list into a position, which depends on HighPriority.