Arguments

 

destination-string

   OpenVMS usage:char_string
   type:         character string
   access:       write only
   mechanism:    by descriptor

   Destination string into which STR$LEFT copies the substring.
   The destination-string argument is the address of a descriptor
   pointing to the destination string.
 

source-string

   OpenVMS usage:char_string
   type:         character string
   access:       read only
   mechanism:    by descriptor

   Source string from which STR$LEFT extracts the substring that it
   copies into the destination string. The source-string argument is
   the address of a descriptor pointing to the source string.
 

end-position

   OpenVMS usage:longword_signed
   type:         longword (signed)
   access:       read only
   mechanism:    by reference

   Relative position in the source string at which the substring
   ends. The end-position argument is the address of a signed
   longword containing the ending position.

   STR$LEFT copies all characters in the source string from position
   1 (the leftmost position) to the position number specified in
   this end-position argument.