\input texinfo @c -*-texinfo-*-

@node Top
@top top

@node chapter
@chapter châp

Texinfo
@example texinfo
@code{texinfo}
@@code@{protécted@}
@end example

C++
@example C++
// Your First C++ Program

#include <iostream>

int main() @{
    std::cout << "Hello Wörld!";
    return 0;
@}
@end example

perl
@example perl
my $list = ['ça', 'bôù', 'é', '@'e @ogonek{a} @euro{} @equiv{}'];
sub do ($) @{
  my $arg = shift;
  return $arg + 4;
@}
@end example

@example perl
my @@SECTION_BUTTONS =
  (
   \&singular_banner,
   'Back', 'Forward',   'FastBack', 'FastForward',
   'Up', 'Top', 'Contents', 'Index', 'About'
  );

texinfo_set_from_init_file ('SECTION_BUTTONS', \@@SECTION_BUTTONS);
@end example

No argument
@example
texinfo_set_from_init_file('NO_CSS', 1);
@end example

Unknown language
@example unknown
unknown language
@end example

@bye