+.IP "\fB\-Z[0\-3]\fR" 4
+.IX Item "-Z[0-3]"
+Convert X0208 alphabet (Fullwidth Alphabets) to \s-1ASCII\s0.
+.RS 4
+.IP "\fB\-Z \-Z0\fR" 4
+.IX Item "-Z -Z0"
+Convert X0208 alphabet to \s-1ASCII\s0.
+.IP "\fB\-Z1\fR" 4
+.IX Item "-Z1"
+Convert X0208 kankaku to single \s-1ASCII\s0 space.
+.IP "\fB\-Z2\fR" 4
+.IX Item "-Z2"
+Convert X0208 kankaku to double \s-1ASCII\s0 spaces.
+.IP "\fB\-Z3\fR" 4
+.IX Item "-Z3"
+Replacing fullwidth >, <, ", & into '>', '<', '"', '&' as in \s-1HTML\s0.
+.RE
+.RS 4
+.RE
+.IP "\fB\-X \-x\fR" 4
+.IX Item "-X -x"
+Assume X0201 kana in MS\-Kanji.
+With \fB\-X\fR or without this option, X0201 is converted into X0208 Kana.
+With \fB\-x\fR, try to preserve X0208 kana and do not convert X0201 kana to X0208.
+In \s-1JIS\s0 output, \s-1ESC\-\s0(\-I is used. In \s-1EUC\s0 output, \s-1SSO\s0 is used.
+.IP "\fB\-B[0\-2]\fR" 4
+.IX Item "-B[0-2]"
+Assume broken JIS-Kanji input, which lost \s-1ESC\s0.
+Useful when your site is using old B\-News Nihongo patch.
+.RS 4
+.IP "\fB\-B1\fR" 4
+.IX Item "-B1"
+allows any chars after \s-1ESC\-\s0( or \s-1ESC\-$\s0.
+.IP "\fB\-B2\fR" 4
+.IX Item "-B2"
+force \s-1ASCII\s0 after \s-1NL\s0.
+.RE
+.RS 4
+.RE
+.IP "\fB\-I\fR" 4
+.IX Item "-I"
+Replacing non iso\-2022\-jp char into a geta character
+(substitute character in Japanese).
+.IP "\fB\-m[\s-1BQN0\s0]\fR" 4
+.IX Item "-m[BQN0]"
+\&\s-1MIME\s0 \s-1ISO\-2022\-JP/ISO8859\-1\s0 decode. (\s-1DEFAULT\s0)
+To see \s-1ISO8859\-1\s0 (Latin\-1) \-l is necessary.
+.RS 4
+.IP "\fB\-mB\fR" 4
+.IX Item "-mB"
+Decode \s-1MIME\s0 base64 encoded stream. Remove header or other part before
+conversion.
+.IP "\fB\-mQ\fR" 4
+.IX Item "-mQ"
+Decode \s-1MIME\s0 quoted stream. '_' in quoted stream is converted to space.
+.IP "\fB\-mN\fR" 4
+.IX Item "-mN"
+Non-strict decoding.
+It allows line break in the middle of the base64 encoding.
+.IP "\fB\-m0\fR" 4
+.IX Item "-m0"
+No \s-1MIME\s0 decode.
+.RE
+.RS 4
+.RE
+.IP "\fB\-M\fR" 4
+.IX Item "-M"
+\&\s-1MIME\s0 encode. Header style. All \s-1ASCII\s0 code and control characters are intact.
+.RS 4
+.IP "\fB\-MB\fR" 4
+.IX Item "-MB"
+\&\s-1MIME\s0 encode Base64 stream.
+Kanji conversion is performed before encoding, so this cannot be used as a picture encoder.
+.IP "\fB\-MQ\fR" 4
+.IX Item "-MQ"
+Perform quoted encoding.
+.RE
+.RS 4
+.RE
+.IP "\fB\-l\fR" 4
+.IX Item "-l"
+Input and output code is \s-1ISO8859\-1\s0 (Latin\-1) and \s-1ISO\-2022\-JP\s0.
+\&\fB\-s\fR, \fB\-e\fR and \fB\-x\fR are not compatible with this option.
+.IP "\fB\-L[uwm] \-d \-c\fR" 4
+.IX Item "-L[uwm] -d -c"
+Convert line breaks.
+.RS 4
+.IP "\fB\-Lu \-d\fR" 4
+.IX Item "-Lu -d"
+unix (\s-1LF\s0)
+.IP "\fB\-Lw \-c\fR" 4
+.IX Item "-Lw -c"
+windows (\s-1CRLF\s0)
+.IP "\fB\-Lm\fR" 4
+.IX Item "-Lm"
+mac (\s-1CR\s0)
+.Sp
+Without this option, nkf doesn't convert line breaks.
+.RE
+.RS 4
+.RE
+.IP "\fB\-\-fj \-\-unix \-\-mac \-\-msdos \-\-windows\fR" 4
+.IX Item "--fj --unix --mac --msdos --windows"
+Convert for these systems.
+.IP "\fB\-\-jis \-\-euc \-\-sjis \-\-mime \-\-base64\fR" 4
+.IX Item "--jis --euc --sjis --mime --base64"
+Convert to named code.
+.IP "\fB\-\-jis\-input \-\-euc\-input \-\-sjis\-input \-\-mime\-input \-\-base64\-input\fR" 4
+.IX Item "--jis-input --euc-input --sjis-input --mime-input --base64-input"
+Assume input system
+.IP "\fB\-\-ic=\f(BIinput codeset\fB \-\-oc=\f(BIoutput codeset\fB\fR" 4
+.IX Item "--ic=input codeset --oc=output codeset"
+Set the input or output codeset.
+\&\s-1NKF\s0 supports following codesets and those codeset names are case insensitive.
+.RS 4
+.IP "\s-1ISO\-2022\-JP\s0" 4
+.IX Item "ISO-2022-JP"
+a.k.a. \s-1RFC1468\s0, 7bit \s-1JIS\s0, \s-1JUNET\s0
+.IP "EUC-JP (eucJP\-nkf)" 4
+.IX Item "EUC-JP (eucJP-nkf)"
+a.k.a. \s-1AT&T\s0 \s-1JIS\s0, Japanese \s-1EUC\s0, \s-1UJIS\s0
+.IP "eucJP-ascii" 4
+.IX Item "eucJP-ascii"
+.PD 0
+.IP "eucJP-ms" 4
+.IX Item "eucJP-ms"
+.IP "\s-1CP51932\s0" 4
+.IX Item "CP51932"
+.PD
+Microsoft Version of \s-1EUC\-JP\s0.
+.IP "Shift_JIS" 4
+.IX Item "Shift_JIS"
+a.k.a. \s-1SJIS\s0, MS-Kanji
+.IP "Windows\-31J" 4
+.IX Item "Windows-31J"
+a.k.a. \s-1CP932\s0
+.IP "\s-1UTF\-8\s0" 4
+.IX Item "UTF-8"
+same as \s-1UTF\-8N\s0
+.IP "\s-1UTF\-8N\s0" 4
+.IX Item "UTF-8N"
+\&\s-1UTF\-8\s0 without \s-1BOM\s0
+.IP "\s-1UTF\-8\-BOM\s0" 4
+.IX Item "UTF-8-BOM"
+\&\s-1UTF\-8\s0 with \s-1BOM\s0
+.IP "\s-1UTF8\-MAC\s0 (input only)" 4
+.IX Item "UTF8-MAC (input only)"
+decomposed \s-1UTF\-8\s0
+.IP "\s-1UTF\-16\s0" 4
+.IX Item "UTF-16"
+same as \s-1UTF\-16BE\s0
+.IP "\s-1UTF\-16BE\s0" 4
+.IX Item "UTF-16BE"
+\&\s-1UTF\-16\s0 Big Endian without \s-1BOM\s0
+.IP "\s-1UTF\-16BE\-BOM\s0" 4
+.IX Item "UTF-16BE-BOM"
+\&\s-1UTF\-16\s0 Big Endian with \s-1BOM\s0
+.IP "\s-1UTF\-16LE\s0" 4
+.IX Item "UTF-16LE"
+\&\s-1UTF\-16\s0 Little Endian without \s-1BOM\s0
+.IP "\s-1UTF\-16LE\-BOM\s0" 4
+.IX Item "UTF-16LE-BOM"
+\&\s-1UTF\-16\s0 Little Endian with \s-1BOM\s0
+.IP "\s-1UTF\-32\s0" 4
+.IX Item "UTF-32"
+same as \s-1UTF\-32BE\s0
+.IP "\s-1UTF\-32BE\s0" 4
+.IX Item "UTF-32BE"
+\&\s-1UTF\-32\s0 Big Endian without \s-1BOM\s0
+.IP "\s-1UTF\-32BE\-BOM\s0" 4
+.IX Item "UTF-32BE-BOM"
+\&\s-1UTF\-32\s0 Big Endian with \s-1BOM\s0
+.IP "\s-1UTF\-32LE\s0" 4
+.IX Item "UTF-32LE"
+\&\s-1UTF\-32\s0 Little Endian without \s-1BOM\s0
+.IP "\s-1UTF\-32LE\-BOM\s0" 4
+.IX Item "UTF-32LE-BOM"
+\&\s-1UTF\-32\s0 Little Endian with \s-1BOM\s0
+.RE
+.RS 4
+.RE
+.IP "\fB\-\-fb\-{skip, html, xml, perl, java, subchar}\fR" 4
+.IX Item "--fb-{skip, html, xml, perl, java, subchar}"
+Specify the way that nkf handles unassigned characters.
+Without this option, \-\-fb\-skip is assumed.
+.IP "\fB\-\-prefix=\f(BIescape character\fB\f(BItarget character\fB..\fR" 4
+.IX Item "--prefix=escape charactertarget character.."
+When nkf converts to Shift_JIS,
+nkf adds a specified escape character to specified 2nd byte of Shift_JIS characters.
+1st byte of argument is the escape character and following bytes are target characters.
+.IP "\fB\-\-no\-cp932ext\fR" 4
+.IX Item "--no-cp932ext"
+Handle the characters extended in \s-1CP932\s0 as unassigned characters.
+.IP "\fB\-\-no\-best\-fit\-chars\fR" 4
+.IX Item "--no-best-fit-chars"
+When Unicode to Encoded byte conversion,
+don't convert characters which is not round trip safe.
+When Unicode to Unicode conversion,
+with this and \-x option, nkf can be used as \s-1UTF\s0 converter.
+(In other words, without this and \-x option, nkf doesn't save some characters)
+.Sp
+When nkf converts strings that related to path, you should use this opion.
+.IP "\fB\-\-cap\-input\fR" 4
+.IX Item "--cap-input"
+Decode hex encoded characters.
+.IP "\fB\-\-url\-input\fR" 4
+.IX Item "--url-input"
+Unescape percent escaped characters.
+.IP "\fB\-\-numchar\-input\fR" 4
+.IX Item "--numchar-input"
+Decode character reference, such as \*(L"&#....;\*(R".
+.IP "\fB\-\-in\-place[=\fR\fI\s-1SUFFIX\s0\fR\fB]\fR \fB\-\-overwrite[=\fR\fI\s-1SUFFIX\s0\fR\fB]\fR" 4
+.IX Item "--in-place[=SUFFIX] --overwrite[=SUFFIX]"
+Overwrite \fBoriginal\fR listed files by filtered result.
+.Sp
+\&\fBNote\fR \-\-overwrite preserves timestamps of original files.
+.IP "\fB\-\-guess=[12]\fR" 4
+.IX Item "--guess=[12]"
+Print guessed encoding and newline. (2 is default, 1 is only encoding)
+.IP "\fB\-\-help\fR" 4
+.IX Item "--help"
+Print nkf's help.
+.IP "\fB\-\-version\fR" 4
+.IX Item "--version"
+Print nkf's version.
+.IP "\fB\-\-\fR" 4
+.IX Item "--"
+Ignore rest of \-option.
+.SH "AUTHOR"
+.IX Header "AUTHOR"
+Copyright (c) 1987, Fujitsu \s-1LTD\s0. (Itaru \s-1ICHIKAWA\s0).