rem: \\xNN    byte with hexadecimal value NN (1 to 2 digits)\n\ \n\ \\uNNNN  character with hexadecimal value NNNN (4 digits)\n\ \\UNNNNNNNN  character with hexadecimal value NNNNNNNN (8 digits)\n\
add: \\xHH    byte with hexadecimal value HH (1 to 2 digits)\n\ \\uHHHH  Unicode (ISO/IEC 10646) character with hex value HHHH (4 digits)\n\ \\UHHHHHHHH  Unicode character with hex value HHHHHHHH (8 digits)\n\
context: usage (int status){  if (status != 0)    fprintf (stderr, _("Try `%s --help' for more information.\n"),	     program_name);  else    {      printf (_("\Usage: %s FORMAT [ARGUMENT]...\n\  or:  %s OPTION\n\"),	      program_name, program_name);      fputs (_("\Print ARGUMENT(s) according to FORMAT.\n\\n\"), stdout);      fputs (HELP_OPTION_DESCRIPTION, stdout);      fputs (VERSION_OPTION_DESCRIPTION, stdout);      fputs (_("\\n\FORMAT controls the output as in C printf.  Interpreted sequences are:\n\\n\  \\\"      double quote\n\  \\0NNN   character with octal value NNN (0 to 3 digits)\n\  \\\\      backslash\n\"), stdout);      fputs (_("\  \\a      alert (BEL)\n\  \\b      backspace\n\  \\c      produce no further output\n\  \\f      form feed\n\"), stdout);      fputs (_("\  \\n      new line\n\  \\r      carriage return\n\  \\t      horizontal tab\n\  \\v      vertical tab\n\"), stdout);      fputs (_("\  \\xNN    byte with hexadecimal value NN (1 to 2 digits)\n\\n\  \\uNNNN  character with hexadecimal value NNNN (4 digits)\n\  \\UNNNNNNNN  character with hexadecimal value NNNNNNNN (8 digits)\n\"), stdout);      fputs (_("\  %%      a single %\n\  %b      ARGUMENT as a string with `\\' escapes interpreted\n\\n\and all C format specifications ending with one of diouxXfeEgGcs, with\n\ARGUMENTs converted to proper type first.  Variable widths are handled.\n\"), stdout);      printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);    }  exit (status);}