The Locate a Character routine locates a character in a string
    by comparing successive bytes in the string with the character
    specified. The search continues until the character is found or
    the string has no more characters. LIB$LOCC makes the VAX LOCC
    instruction available as a callable routine.

    Format

      LIB$LOCC  character-string ,source-string

  Additional Information (explode) :

• Returns
• Arguments