GetEditionFormatMark
GetEditionFormatMark Locate the current marker for a particular format
#include <Editions.h> Edition Manager
OSErr GetEditionFormatMark( whichEdition, whichFormat,
currentMark );
EditionRefNum whichEdition ; is the reference number for the edition.
FormatType whichFormat ; indicates the format type for the edition
unsigned long currentMark ; is the mark for the format
returns Error Code; 0=no error
Use the GetEditionFormatMark function to locate the current marker for a
particular format.
whichEdition is the reference number for the edition.
whichFormat indicates the format type for the edition
setMarkTo is the mark for the format
Returns: an operating system Error Code.
noErr (0) No error
rfNumErr (-51) Bad edition reference number
noTypeErr (-102) Unknown format ( subscriber only)
editionMgrInitErr (-450) Manager not initialized

Notes: If the edition does not support the format specified in the whichFormat
parameter, you receive a noTypeErr result code.