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       m4 [OPTION]... [FILE]...


       Mandatory or optional arguments to long options are manda­
       tory or optional for short options too.

   Operation modes:
       --help display this help and exit

              output version information and exit

       -e, --interactive
              unbuffer output, ignore interrupts

       -E, --fatal-warnings
              stop execution after first warning

       -Q, --quiet, --silent
              suppress some warnings for builtins

       -P, --prefix-builtins
              force a `m4_' prefix to all builtins

   Preprocessor features:
       -I, --include=DIRECTORY
              search this directory second for includes

       -D, --define=NAME[=VALUE]
              enter NAME has having VALUE, or empty

       -U, --undefine=NAME
              delete builtin NAME

       -s, --synclines
              generate `#line NO "FILE"' lines

   Limits control:
       -G, --traditional
              suppress all GNU extensions

       -H, --hashsize=PRIME
              set symbol lookup hash table size

       -L, --nesting-limit=NUMBER
              change artificial nesting limit

   Frozen state files:
       -F, --freeze-state=FILE
              produce a frozen state on FILE at end

              redirect debug and trace output

   FLAGS is any of:
       t      trace for all macro calls, not only traceon'ed

       a      show actual arguments

       e      show expansion

       q      quote values as necessary, with a or e flag

       c      show before collect, after collect and after call

       x      add a unique macro call id, useful with c flag

       f      say current input file name

       l      say current input line number

       p      show results of path searches

       i      show changes in input files

       V      shorthand for all of the above flags

       If no FILE or if FILE is `-', standard input is read.


       Report bugs to <bug-m4@gnu.org>.


       The full documentation for m4 is maintained as  a  Texinfo
       manual.    If  the  info  and  m4  programs  are  properly
       installed at your site, the command

              info m4

       should allow you to access the manual as an hypertext.

GNU m4 1.4o               September 2003                    M4(1)



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