https://issues.dlang.org/show_bug.cgi?id=14475

          Issue ID: 14475
           Summary: man page is outdated
           Product: D
           Version: unspecified
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: trivial
          Priority: P1
         Component: DMD
          Assignee: nobody@puremagic.com
          Reporter: r9shackleford@gmail.com

dmd --help details options not discussed on neither the man pages nor http://dlang.org/dmd-linux.html

examples:
-allinst
-dip25
-gx
etc

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