Arguments

 

desc

   OpenVMS usage:char_string
   type:         character-coded text string
   access:       write only
   mechanism:    by descriptor
   Output record buffer. The desc argument is the address of a
   descriptor pointing to the buffer that receives the sorted or
   merged record.
 

length

   OpenVMS usage:word_unsigned
   type:         word (unsigned)
   access:       write only
   mechanism:    by reference
   Length of the output record. The length argument is the address
   of a word receiving the length of the record returned from
   SORT/MERGE.
 

context

   OpenVMS usage:context
   type:         longword (unsigned)
   access:       modify
   mechanism:    by reference
   Value that distinguishes between multiple, concurrent SORT/MERGE
   operations. The context argument is the address of a longword
   containing the context value. When your program makes its first
   call to a SORT/MERGE routine for a particular sort or merge
   operation, the context longword must equal zero. SORT/MERGE
   then stores a value in the longword to identify the operation
   just initiated. When you make subsequent routine calls for the
   same operation, you must pass the context value supplied by
   SORT/MERGE.