If you cannot fit all of these dependencies on one line, you
      can add more and more lines of these directives.

    + LIB=                            The library files you depend on
    + INCLUDE=                        The include files you depend on
    + INCLUDE1=  ...  INCLUDE99=      (can be different for each section)
    + PROG1=    ....  PROG99=         The source files to compile

    + Denotes directives that can be used additively. This means
      that if you need more of each type of these directives than will
      conveniently fit on one line, you may add more and more of these
      until all files are listed.

      They are additive. The basic limit is that of Clipper. No more
      than 4096 elements in any directive group (they are arrays).

      If you use any of the other directives more than once, PBMake will
      use the last one read in.

      It is highly unlikely you will ever reach the limits of PBMake.