3.1.1 BASIC Command
  When you compile your source program, use the BASIC
  command, which has the following format:
  BASIC [ /qualifier ...][ file specification [ /qualifier ...]],...)

  /qualifier
  Indicates a specific action to be performed by the compiler
  on all files or specific files listed. When a qualifier appears
  directly after the BASIC command, it affects all files listed.

  file specification
  Indicates the name of the input source file that contains the
  program or module to be compiled. You are not required
  to specify a file extension; the BASIC compiler assumes the
  default file type .BAS.

  In VAX BASIC, if you enter the command BASIC without
  a file specification, you enter the BASIC environment. DEC
  BASIC does not support the BASIC environment. For more
  information about the BASIC environment, see Chapter 2.

  Most of the command qualifiers to the BASIC command
  affect all files specified in the command line, no matter
  where the qualifiers are placed; these are called global
  qualifiers . However, the qualifiers /LISTING, /OBJECT,
  /DIAGNOSTICS, and /ANALYSIS_DATA are positional
  qualifiers ; that is, depending on their position in the com-
  mand line, they can affect all or only some of the specified
  files. The rules for positional qualifiers are as follows:

  .
        If the positional qualifier is located directly following the
        command name, it affects all the specified files.
  .
        If the file specifications are separated by commas, then
        any positional qualifier directly following a file specifica-
        tion affects only that file.
  .
        If the file specifications are separated by CDD/Repository
        signs, then any positional qualifier directly following a list
        of file specifications affects only the resulting appended
        file.
  .
        The rightmost qualifier overrides any conflicting qualifier
        previously specified in the command line.

  The placement of these positional qualifiers causes BASIC to
  produce or not produce listing files, object files, and diagnostics
  files. For example:
  $ BASIC/LIST/OBJ PROG1/NOOBJ/DIAG,PROG2+PROG3/NOLIST

  This command does the following:

  .
        Compiles PROG1 and produces a listing file called
        PROG1.LIS
  .
        Produces no object file for PROG1
  .
        Produces a diagnostics file for PROG1 called PROG1.DIA
  .
        Appends PROG2 and PROG3 for compilation, producing
        a temporary source file called PROG2
  .
        Compiles the new PROG2 and produces an object file
        called PROG2.OBJ
  .
        Produces no listing file for the new PROG2

  VAX BASIC requires that source files using the plus sign (+)
  to append source files, use line numbers within the files, or an
  error message is printed.

  DEC BASIC does not require line numbers in either of the
  source files. The "+" operator is treated as an OpenVMS
  append operator. DEC BASIC appends and compiles the
  separate files as if they were a single source file.