--- a/tradcpp.1	Tue Jun 11 18:32:41 2013 -0400
+++ b/tradcpp.1	Tue Jun 11 19:02:33 2013 -0400
@@ -161,6 +161,10 @@
 .Fl MM
 but skip system headers.
 Not implemented.
+.It Fl MF Ar file
+Send dependency output to the named file instead of the default
+location.
+Not implemented.
 .It Fl MG
 When generating dependency information, assume that missing files are
 generated instead of failing.
@@ -171,6 +175,88 @@
 .Xr make 1
 from choking if an include file is removed.
 Not implemented.
+.It Fl MQ Ar target
+Same as
+.Fl MT
+except that any
+.Xr make 1
+metacharacters appearing in the target are escaped.
+.It Fl MT Ar target
+Set the name of the
+.Xr make 1
+target appearing in the generated dependency information.
+The default is the name of the input file with its suffix replaced
+with the suffix for object files, normally
+.Pa .o .
+.\" If this option is given more than once, all named targets will
+.\" be emitted.
+.\" (The current operating mode framework doesn't support that.)
+.El
+.Ss More Include Path Options
+.Bl -tag -width bubblebabble
+.It Fl idirafter Ar path
+Add the specified path to the
+.Dq afterwards
+include path.
+This path is searched after all directories specified with
+.Fl I
+and the standard system directories.
+Directories on this path are treated as containing system include
+files.
+.It Fl imacros Ar file
+Read in
+.Ar file
+prior to reading the main input file, and preprocess it, but throw
+away the output and retain only the macro definitions.
+.It Fl include Ar file
+Read in and preprocess
+.Ar file
+prior to reading the main input file.
+.It Fl iprefix Ar prefix
+Set the path prefix used with the
+.Fl iwithprefix
+option.
+.It Fl iquote Ar path
+Add
+.Ar path
+to the list of directories searched for include directives written
+with quotes.
+This list is not searched for include directives written with angle
+brackets.
+.It Fl iremap Ar string:replacement
+Substitute
+.Ar replacement
+for
+.Ar string
+in the
+.Dv __FILE__
+built-in macro.
+Not supported.
+.It Fl isysroot Ar path
+Use
+.Ar path
+as the
+.Dq system root ,
+that is, the directory under which the standard system paths are found.
+.It Fl isystem Ar path
+Add
+.Ar path
+to the list of system include directories.
+This list is searched after the list given with
+.Ar I .
+Files found on this path are treated as system headers.
+.It Fl iwithprefix Ar dir
+Splice
+.Ar dir
+onto the prefix given with
+.Fl iprefix
+and add this directory as if it were specified with
+.Fl idirafter .
+.It Fl iwithprefixbefore
+Like
+-Fl iwithprefix
+but adds the result as if it were specified with
+.Fl I .
 .El
 .Ss Diagnostic Options
 .Bl -tag -width bubblebabble
@@ -223,6 +309,16 @@
 This option is accepted for compatibility with
 .Xr gcc 1
 and ignored.
+.It Fl x Ar lang
+Adjust the preprocessor for the given language.
+The only values accepted for
+.Ar lang
+are
+.Dq assembler-with-cpp
+and
+.Dq c ,
+neither of which have any effect on the behavior of
+.Nm .
 .El
 .Sh FILES
 The default list of directories searched for include files is: