Closes the Network Semaphore File
Declare Function pp_semclose(ByVal semhandle As Long) As Long
LONG pp_semclose(LONG semhandle)
<semhandle> is the handle to the semaphore file given by pp_semopen()
Refer to pp_errorstr() for a table of possible return codes and their meaning. Typically, PP_SUCCESS  (file was closed) is returned.
Closes the Network Semaphore File previously opened with pp_semopen().
Refer to pp_semopen() for an example of using this function.
PP_SEMOPEN(), PP_SEMUSED(), and PP_SEMCOUNT()