* docs/MAIL.FILTERING: added note on removing procmail -f or

[mmh] / man / mhshow.man

diff --git a/man/mhshow.man b/man/mhshow.man
index 30a925f..78d8ed9 100644 (file)
--- a/man/mhshow.man
+++ b/man/mhshow.man
@@ -2,70 +2,103 @@
 .\" %nmhwarning%
 .\" $Id$
 .\"
 .\" %nmhwarning%
 .\" $Id$
 .\"

-.\" include the -mh macro file
-.so %etcdir%/tmac.h
-.\"
-.TH MHSHOW %manext1% MH.6.8 [%nmhversion%]
+.TH MHSHOW %manext1% "%nmhdate%" MH.6.8 [%nmhversion%]

 .SH NAME
 mhshow \- display MIME messages
 .SH SYNOPSIS
 .SH NAME
 mhshow \- display MIME messages
 .SH SYNOPSIS

-.in +.5i
-.ti -.5i
-mhshow \%[+folder] \%[msgs] \%[\-file file]
-.br
-\%[\-part number]... \%[\-type content]...
-.br
-\%[\-serialonly] \%[\-noserialonly]
-\%[\-pause] \%[\-nopause]
-.br
-\%[\-check] \%[\-nocheck]
-\%[\-form formfile]
-.br
-\%[\-rcache policy] \%[\-wcache policy]
-.br
-\%[\-verbose] \%[\-noverbose]
-\%[\-version] \%[\-help]
-.in -.5i
-
+.HP 5
+.na
+.B mhshow
+.RI [ +folder ]
+.RI [ msgs ]
+.RB [ \-file
+.IR file ]
+.RB [ \-part
+.IR number ]
+\&...
+.RB [ \-type
+.IR content ]
+\&...
+.RB [ \-serialonly " | " \-noserialonly ]
+.RB [ \-pause " | " \-nopause ]
+.RB [ \-form
+.IR formfile ]
+.RB [ \-rcache
+.IR policy ]
+.RB [ \-wcache
+.IR policy ]
+.RB [ \-check " | " \-nocheck ]
+.RB [ \-version ]
+.RB [ \-help ]
+.ad

 .SH DESCRIPTION
 .SH DESCRIPTION

-The \fImhshow\fR command display contents of a MIME (multi-media)
+The
+.B mhshow
+command display contents of a MIME (multi-media)

 message or collection of messages.
 message or collection of messages.

-
-\fImhshow\fR manipulates multi-media messages as specified in
-RFC\-2045 thru RFC\-2049.  Currently \fImhshow\fR only supports
+.PP
+.B mhshow
+manipulates multi-media messages as specified in
+RFC\-2045 thru RFC\-2049.  Currently
+.B mhshow
+only supports

 encodings in message bodies, and does not support the encoding of
 message headers as specified in RFC\-2047.
 encodings in message bodies, and does not support the encoding of
 message headers as specified in RFC\-2047.

-
-By default \fImhshow\fR will display all parts of a multipart
-message.  By using the `\-part' and `\-type' switches, you may
-limit the scope of \fImhshow\fR to particular subparts (of a
+.PP
+By default
+.B mhshow
+will display all parts of a multipart
+message.  By using the
+.B \-part
+and
+.B \-type
+switches, you may
+limit the scope of
+.B mhshow
+to particular subparts (of a

 multipart content) and/or particular content types.
 multipart content) and/or particular content types.

-
-The option `\-file\ file' directs \fImhshow\fR to use the specified file as
+.PP
+The option
+.B \-file
+.I file
+directs
+.B mhshow
+to use the specified file as

 the source message, rather than a message from a folder.  If you specify
 the source message, rather than a message from a folder.  If you specify

-this file as \*(lq-\*(rq, then \fImhshow\fR will accept the source message
+this file as \*(lq-\*(rq, then
+.B mhshow
+will accept the source message

 on the standard input.  Note that the file, or input from standard input
 on the standard input.  Note that the file, or input from standard input

-should be a validly formatted message, just like any other \fInmh\fR
-message.  It should \fBNOT\fR be in mail drop format (to convert a file in
-mail drop format to a folder of \fInmh\fR messages, see \fIinc\fR\0(1)).
-
+should be a validly formatted message, just like any other
+.B nmh
+message.  It should
+.B NOT
+be in mail drop format (to convert a file in
+mail drop format to a folder of
+.B nmh
+messages, see
+.BR inc (1)).
+.PP

 A part specification consists of a series of numbers separated by dots.
 For example, in a multipart content containing three parts, these
 would be named as 1, 2, and 3, respectively.  If part 2 was also a
 multipart content containing two parts, these would be named as 2.1 and
 A part specification consists of a series of numbers separated by dots.
 For example, in a multipart content containing three parts, these
 would be named as 1, 2, and 3, respectively.  If part 2 was also a
 multipart content containing two parts, these would be named as 2.1 and

-2.2, respectively.  Note that the `\-part' switch is effective for only
+2.2, respectively.  Note that the
+.B \-part
+switch is effective for only

 messages containing a multipart content.  If a message has some other
 kind of content, or if the part is itself another multipart content, the
 messages containing a multipart content.  If a message has some other
 kind of content, or if the part is itself another multipart content, the

-`\-part' switch will not prevent the content from being acted upon.
-
+.B \-part
+switch will not prevent the content from being acted upon.
+.PP

 A content specification consists of a content type and a subtype.
 The initial list of \*(lqstandard\*(rq content types and subtypes can
 be found in RFC\-2046.
 A content specification consists of a content type and a subtype.
 The initial list of \*(lqstandard\*(rq content types and subtypes can
 be found in RFC\-2046.

-.ne 18
+.PP

 A list of commonly used contents is briefly reproduced here:
 A list of commonly used contents is briefly reproduced here:

-.sp
+.PP
+.RS 5

 .nf
 .nf

-.in +.5i

 .ta \w'application  'u
 Type   Subtypes
 ----   --------
 .ta \w'application  'u
 Type   Subtypes
 ----   --------

@@ -76,10 +109,9 @@ application octet-stream, postscript
 image  jpeg, gif, png
 audio  basic
 video  mpeg
 image  jpeg, gif, png
 audio  basic
 video  mpeg

-.re
-.in -.5i

 .fi
 .fi

-.sp
+.RE
+.PP

 A legal MIME message must contain a subtype specification.
 .PP
 To specify a content, regardless of its subtype, just use the
 A legal MIME message must contain a subtype specification.
 .PP
 To specify a content, regardless of its subtype, just use the

@@ -91,52 +123,108 @@ Further note that if the `\-type' switch is used, and it is desirable to
 act on a message/external-body content, then the `\-type' switch must
 be used twice: once for message/external-body and once for the content
 externally referenced.
 act on a message/external-body content, then the `\-type' switch must
 be used twice: once for message/external-body and once for the content
 externally referenced.

-
-.Uh "Unseen Sequence"
-
+.SS "Unseen Sequence"

 If the profile entry \*(lqUnseen\-Sequence\*(rq is present and
 If the profile entry \*(lqUnseen\-Sequence\*(rq is present and

-non\-empty, then \fImhshow\fR will remove each of the messages shown
+non\-empty, then
+.B mhshow
+will remove each of the messages shown

 from each sequence named by the profile entry.
 from each sequence named by the profile entry.

-
-.Uh "Checking the Contents"
-The `\-check' switch tells \fImhshow\fR to check each content for an
+.SS "Checking the Contents"
+The
+.B \-check
+switch tells
+.B mhshow
+to check each content for an

 integrity checksum.  If a content has such a checksum (specified as a
 integrity checksum.  If a content has such a checksum (specified as a

-Content-MD5 header field), then \fImhshow\fR will attempt to verify the
+Content-MD5 header field), then
+.B mhshow
+will attempt to verify the

 integrity of the content.
 integrity of the content.

-
-.Uh "Showing the Contents"
-The headers of each message are displayed with the \fImhlproc\fR
-(usually \fImhl\fR), using the standard format file \fImhl.headers\fR.
-You may specify an alternate format file with the `\-form formfile'
-switch.  If the format file \fImhl.null\fR is specified, then the display
+.SS "Showing the Contents"
+The headers of each message are displayed with the
+.I mhlproc
+(usually
+.BR mhl ),
+using the standard format file
+.IR mhl.headers .
+You may specify an alternate format file with the
+.B \-form
+.I formfile
+switch.  If the format file
+.I mhl.null
+is specified, then the display

 of the message headers is suppressed.
 of the message headers is suppressed.

-
+.PP
+Next, the contents are extracted from the message and are stored in
+a temporary file.  Usually, the name of the temporary file is the
+word \*(lqmhshow\*(rq followed by a string of characters.  Occasionally,
+the method used to display a content (described next), requires that
+the file end in a specific suffix.  For example, the
+.B soffice
+command (part of the StarOffice package) can be used to display
+Microsoft Word content, but it uses the suffix to determine how to display
+the file.  If no suffix is present, the file is not correctly loaded.
+Similarily, older versions of the
+.B gs
+command append a \*(lq.ps\*(rq suffix to
+the filename if one was missing.  As a result, these cannot be used to read
+the default temporary file.
+.PP
+To get around this, your profile can contain lines of the form:
+.PP
+.RS 5
+mhshow-suffix-<type>/<subtype>: <suffix>
+.RE
+.PP
+or
+.PP
+.RS 5
+mhshow-suffix-<type>: <suffix>
+.RE
+.PP
+to specify a suffix which can be automatically added to the temporary
+file created for a specific content type.  For example, the following
+lines might appear in your profile:
+.PP
+.RS 5
+.nf
+mhshow-suffix-text: .txt
+mhshow-suffix-application/msword: .doc
+mhshow-suffix-application/PostScript: .ps
+.fi
+.RE
+.PP
+to automatically append a suffix to the temporary files.
+.PP

 The method used to display the different contents in the messages bodies
 will be determined by a \*(lqdisplay string\*(rq.  To find the display
 The method used to display the different contents in the messages bodies
 will be determined by a \*(lqdisplay string\*(rq.  To find the display

-string, \fImhshow\fR will first search your profile for an entry of the
-form:
-.sp
-.in +.5i
+string,
+.B mhshow
+will first search your profile for an entry of the form:
+.PP
+.RS 5

 mhshow-show-<type>/<subtype>
 mhshow-show-<type>/<subtype>

-.in -.5i
-.sp
-to determine the display string.  If this isn't found, \fImhshow\fR
+.RE
+.PP
+to determine the display string.  If this isn't found,
+.B mhshow

 will search for an entry of the form:
 will search for an entry of the form:

-.sp
-.in +.5i
+.PP
+.RS 5

 mhshow-show-<type>
 mhshow-show-<type>

-.in -.5i
-.sp
+.RE
+.PP

 to determine the display string.
 to determine the display string.

-
+.PP

 If a display string is found, any escapes (given below) will be expanded.
 If a display string is found, any escapes (given below) will be expanded.

-The result will be executed under \fB/bin/sh\fR, with the standard input
+The result will be executed under
+\*(lq/bin/sh\*(rq, with the standard input

 set to the content.
 set to the content.

-.ne 16
+.PP

 The display string may contain the following escapes:
 The display string may contain the following escapes:

-.sp
+.PP
+.RS 5

 .nf
 .nf

-.in +.5i

 .ta \w'%F  'u
 %a     Insert parameters from Content-Type field
 %e     exclusive execution
 .ta \w'%F  'u
 %a     Insert parameters from Content-Type field
 %e     exclusive execution

@@ -147,169 +235,224 @@ The display string may contain the following escapes:
 %s     Insert content subtype
 %d     Insert content description
 %%     Insert the character %
 %s     Insert content subtype
 %d     Insert content description
 %%     Insert the character %

-.re
-.in -.5i

 .fi
 .fi

-.sp
-.ne 10
-For those display strings containing the e- or F-escape, \fImhshow\fR will
+.RE
+.PP
+For those display strings containing the e- or F-escape,
+.B mhshow
+will

 execute at most one of these at any given time.  Although the F-escape
 expands to be the filename containing the content, the e-escape has no
 expansion as far as the shell is concerned.
 execute at most one of these at any given time.  Although the F-escape
 expands to be the filename containing the content, the e-escape has no
 expansion as far as the shell is concerned.

-
+.PP

 When the p-escape prompts for confirmation, typing INTR (usually
 When the p-escape prompts for confirmation, typing INTR (usually

-control-C) will tell \fImhshow\fR not to display that content.
-The p-escape can be disabled by specifying the switch `\-nopause'.
-Further, when \fImhshow\fR is display a content, typing QUIT (usually
-control-\\) will tell \fImhshow\fR to wrap things up immediately.
-
+control-C) will tell
+.B mhshow
+not to display that content.
+The p-escape can be disabled by specifying the switch
+.BR \-nopause .
+Further, when
+.B mhshow
+is display a content, typing QUIT (usually
+control-\\) will tell
+.B mhshow
+to wrap things up immediately.
+.PP

 Note that if the content being displayed is multipart, but not one of
 the subtypes listed above, then the f- and F-escapes expand to multiple
 filenames, one for each subordinate content.  Further, stdin is not
 redirected from the terminal to the content.
 Note that if the content being displayed is multipart, but not one of
 the subtypes listed above, then the f- and F-escapes expand to multiple
 filenames, one for each subordinate content.  Further, stdin is not
 redirected from the terminal to the content.

-
-If a display string is not found, \fImhshow\fR has several default values:
-.sp
+.PP
+If a display string is not found,
+.B mhshow
+has several default values:
+.PP
+.RS 5

 .nf
 .nf

-.in +.5i

 mhshow-show-text/plain: %pmoreproc '%F'
 mhshow-show-message/rfc822: %pshow -file '%F'
 mhshow-show-text/plain: %pmoreproc '%F'
 mhshow-show-message/rfc822: %pshow -file '%F'

-.in -.5i

 .fi
 .fi

-.sp
+.RE
+.PP

 If a subtype of type text doesn't have a profile entry, it will be
 treated as text/plain.
 If a subtype of type text doesn't have a profile entry, it will be
 treated as text/plain.

-
-\fImhshow\fR has default methods for handling multipart messages of subtype
+.PP
+.B mhshow
+has default methods for handling multipart messages of subtype

 mixed, alternative, parallel, and digest.  Any unknown subtype of type
 multipart (without a profile entry), will be treated as multipart/mixed.
 mixed, alternative, parallel, and digest.  Any unknown subtype of type
 multipart (without a profile entry), will be treated as multipart/mixed.

-
-If none of these apply, then \fImhshow\fR will check to see if the message
+.PP
+If none of these apply, then
+.B mhshow
+will check to see if the message

 has an application/octet-stream content with parameter \*(lqtype=tar\*(rq.
 has an application/octet-stream content with parameter \*(lqtype=tar\*(rq.

-If so, \fImhshow\fR will use an appropriate command.  If not, \fImhshow\fR
+If so,
+.B mhshow
+will use an appropriate command.  If not,
+.B mhshow

 will complain.
 will complain.

-
-.ne 10
+.PP

 Example entries might be:
 Example entries might be:

-.sp
+.PP
+.RS 5

 .nf
 .nf

-.in +.5i

 mhshow-show-audio/basic: raw2audio 2>/dev/null | play
 mhshow-show-image: xv '%f'
 mhshow-show-application/PostScript: lpr -Pps
 mhshow-show-audio/basic: raw2audio 2>/dev/null | play
 mhshow-show-image: xv '%f'
 mhshow-show-application/PostScript: lpr -Pps

-.in -.5i

 .fi
 .fi

-.sp
+.RE
+.PP

 Note that when using the f- or F-escape, it's a good idea to use
 single-quotes around the escape.  This prevents misinterpretation by
 the shell of any funny characters that might be present in the filename.
 Note that when using the f- or F-escape, it's a good idea to use
 single-quotes around the escape.  This prevents misinterpretation by
 the shell of any funny characters that might be present in the filename.

-
-Finally, \fImhshow\fR will process each message serially\0--\0it won't start
+.PP
+Finally,
+.B mhshow
+will process each message serially\0--\0it won't start

 showing the next message until all the commands executed to display the
 current message have terminated.  In the case of a multipart content
 (of any subtype listed above), the content contains advice indicating if
 the parts should be displayed serially or in parallel.  Because this may
 showing the next message until all the commands executed to display the
 current message have terminated.  In the case of a multipart content
 (of any subtype listed above), the content contains advice indicating if
 the parts should be displayed serially or in parallel.  Because this may

-cause confusion, particularly on uni-window displays, the `\-serialonly'
-switch can be given to tell \fImhshow\fR to never display parts in parallel.
-
-.Uh "Showing Alternate Character Sets"
+cause confusion, particularly on uni-window displays, the
+.B \-serialonly
+switch can be given to tell
+.B mhshow
+to never display parts in parallel.
+.SS "Showing Alternate Character Sets"

 Because a content of type text might be in a non-ASCII character
 Because a content of type text might be in a non-ASCII character

-set, when \fImhshow\fR encounters a \*(lqcharset\*(rq parameter for
+set, when
+.B mhshow
+encounters a \*(lqcharset\*(rq parameter for

 this content, it checks if your terminal can display this character
 this content, it checks if your terminal can display this character

-set natively.  \fIMhn\fR checks this by examining the the environment
-variable MM_CHARSET.  If the value of this environment variable is equal
-to the value of the charset parameter, then \fImhshow\fR assumes it can
+set natively.
+.B mhn
+checks this by examining the the environment
+variable
+.BR $MM_CHARSET .
+If the value of this environment variable is equal
+to the value of the charset parameter, then
+.B mhshow
+assumes it can

 display this content without any additional setup.  If this environment
 display this content without any additional setup.  If this environment

-variable is not set, \fImhshow\fR will assume a value of \*(lqUS-ASCII\*(rq.
-If the character set cannot be displayed natively, then \fImhshow\fR will
-look for an entry of the form:
-.sp
-.in +.5i
+variable is not set,
+.B mhshow
+will assume a value of \*(lqUS-ASCII\*(rq.
+If the character set cannot be displayed natively, then
+.B mhshow
+will look for an entry of the form:
+.PP
+.RS 5

 mhshow-charset-<charset>
 mhshow-charset-<charset>

-.in -.5i
-.sp
+.RE
+.PP

 which should contain a command creating an environment to render
 the character set.  This command string should containing a single
 \*(lq%s\*(rq, which will be filled-in with the command to display the
 content.
 which should contain a command creating an environment to render
 the character set.  This command string should containing a single
 \*(lq%s\*(rq, which will be filled-in with the command to display the
 content.

-
+.PP

 Example entries might be:
 Example entries might be:

-.sp
-.in +.5i
+.PP
+.RS 5

 mhshow-charset-iso-8859-1: xterm -fn '-*-*-medium-r-normal-*-*-120-*-*-c-*-iso8859-*' -e %s
 mhshow-charset-iso-8859-1: xterm -fn '-*-*-medium-r-normal-*-*-120-*-*-c-*-iso8859-*' -e %s

-.in -.5i
+.RE
+.PP

 or
 or

-.in +.5i
+.PP
+.RS 5

 mhshow-charset-iso-8859-1: '%s'
 mhshow-charset-iso-8859-1: '%s'

-.in -.5i
-.sp
-The first example tells \fImhshow\fR to start \fIxterm\fR and load the
+.RE
+.PP
+The first example tells
+.B mhshow
+to start
+.B xterm
+and load the

 appropriate character set for that message content.  The second example
 appropriate character set for that message content.  The second example

-tells \fImhshow\fR that your pager (or other program handling that content
+tells
+.B mhshow
+that your pager (or other program handling that content

 type) can handle that character set, and that no special processing is
 needed beforehand.
 type) can handle that character set, and that no special processing is
 needed beforehand.

-.sp
+.PP

 Note that many pagers strip off the high-order bit or have problems
 displaying text with the high-order bit set.  However, the pager
 Note that many pagers strip off the high-order bit or have problems
 displaying text with the high-order bit set.  However, the pager

-\fIless\fR has support for single-octet character sets.  The source
-to \fIless\fR is available on many ftp sites carrying free software.
+.B less
+has support for single-octet character sets.  The source
+to
+.B less
+is available on many ftp sites carrying free software.

 In order to view messages sent in the ISO-8859-1 character set using
 In order to view messages sent in the ISO-8859-1 character set using

-\fIless\fR,
-.ne 9
-put these lines in your \&.login file:
-.sp
+.BR less ,
+.PP
+put these lines in your
+.I \&.login
+file:
+.PP
+.RS 5

 .nf
 .nf

-.in +.5i

 setenv LESSCHARSET latin1
 setenv LESS "-f"
 setenv LESSCHARSET latin1
 setenv LESS "-f"

-.in -.5i

 .fi
 .fi

-.sp
-The first line tells \fIless\fR to use the ISO-8859-1 definition for
+.RE
+.PP
+The first line tells
+.B less
+to use the ISO-8859-1 definition for

 determining whether a character is \*(lqnormal\*(rq, \*(lqcontrol\*(lq,
 determining whether a character is \*(lqnormal\*(rq, \*(lqcontrol\*(lq,

-or \*(lqbinary\*(rq.  The second line tells \fIless\fR not to warn you
+or \*(lqbinary\*(rq.  The second line tells
+.B less
+not to warn you

 if it encounters a file that has non-ASCII characters.  Then, simply
 if it encounters a file that has non-ASCII characters.  Then, simply

-set the \fBmoreproc\fR profile entry to \fIless\fR, and it will get
+set the
+.I moreproc
+profile entry to
+.BR less ,
+and it will get

 called automatically.  (To handle other single-octet character sets,
 called automatically.  (To handle other single-octet character sets,

-look at the \fIless\fR\0(1) manual entry for information about the
-\fBLESSCHARDEF\fR environment variable.)
-
-.Uh "Messages of Type message/partial"
-\fImhshow\fR cannot directly display messages of type partial.
+look at the
+.BR less (1)
+manual entry for information about the
+.B $LESSCHARDEF
+environment variable.)
+.SS "Messages of Type message/partial"
+.B mhshow
+cannot directly display messages of type partial.

 You must reassemble them first into a normal message using
 You must reassemble them first into a normal message using

-\fImhstore\fR.  Check the man page for \fImhstore\fR for details.
-
-.Uh "External Access"
+.BR mhstore .
+Check the man page for
+.BR mhstore (1)
+for details.
+.SS "External Access"

 For contents of type message/external-body,
 For contents of type message/external-body,

-.ne 12
-\fImhshow\fR supports these access-types:
-.sp
-.nf
-.in +.5i
+.B mhshow
+supports these access-types:
+.PP
+.IP \(bu 4

 afs
 afs

+.IP \(bu 4

 anon-ftp
 anon-ftp

+.IP \(bu 4

 ftp
 ftp

+.IP \(bu 4

 local-file
 local-file

+.IP \(bu 4

 mail-server
 mail-server

-.in -.5i
-.fi
-.sp
+.PP

 For the \*(lqanon-ftp\*(rq and \*(lqftp\*(rq access types,
 For the \*(lqanon-ftp\*(rq and \*(lqftp\*(rq access types,

-\fImhshow\fR will look for the \fBnmh-access-ftp\fR
-profile entry,
-.ne 6
-e.g.,
-.sp
-.in +.5i
+.B mhshow
+will look for the \*(lqnmh-access-ftp\*(rq
+profile entry, e.g.,
+.PP
+.RS 5

 nmh-access-ftp: myftp.sh
 nmh-access-ftp: myftp.sh

-.in -.5i
-.sp
+.RE
+.PP

 to determine the pathname of a program to perform the FTP retrieval.
 to determine the pathname of a program to perform the FTP retrieval.

-.ne 14
+.PP

 This program is invoked with these arguments:
 This program is invoked with these arguments:

-.sp
+.PP
+.RS 5

 .nf
 .nf

-.in +.5i

 domain name of FTP-site
 username
 password
 domain name of FTP-site
 username
 password

@@ -317,164 +460,147 @@ remote directory
 remote filename
 local filename
 \*(lqascii\*(rq or \*(lqbinary\*(rq
 remote filename
 local filename
 \*(lqascii\*(rq or \*(lqbinary\*(rq

-.in -.5i

 .fi
 .fi

-.sp
+.RE
+.PP

 The program should terminate with an exit status of zero if the
 retrieval is successful, and a non-zero exit status otherwise.
 The program should terminate with an exit status of zero if the
 retrieval is successful, and a non-zero exit status otherwise.

-
-If this entry is not provided, then \fImhshow\fR will use a simple
+.PP
+If this entry is not provided, then
+.B mhshow
+will use a simple

 built-in FTP client to perform the retrieval.
 built-in FTP client to perform the retrieval.

-
-.Uh "The Content Cache"
-When \fImhshow\fR encounters an external content containing a
+.SS "The Content Cache"
+When
+.B mhshow
+encounters an external content containing a

 \*(lqContent-ID:\*(rq field, and if the content allows caching, then
 \*(lqContent-ID:\*(rq field, and if the content allows caching, then

-depending on the caching behavior of \fImhshow\fR, the content might be
-read from or written to a cache.
-
-The caching behavior of \fImhshow\fR is controlled with the `\-rcache'
-and `\-wcache' switches, which define the policy for reading from,
+depending on the caching behavior of
+.BR mhshow ,
+the content might be read from or written to a cache.
+.PP
+The caching behavior of
+.B mhshow
+is controlled with the
+.B \-rcache
+and
+.B \-wcache
+switches, which define the policy for reading from,

 and writing to, the cache, respectively.  One of four policies may be
 and writing to, the cache, respectively.  One of four policies may be

-specified: \*(lqpublic\*(rq, indicating that \fImhshow\fR should make use
+specified: \*(lqpublic\*(rq, indicating that
+.B mhshow
+should make use

 of a publically-accessible content cache; \*(lqprivate\*(rq, indicating
 of a publically-accessible content cache; \*(lqprivate\*(rq, indicating

-that \fImhshow\fR should make use of the user's private content cache;
-\*(lqnever\*(rq, indicating that \fImhshow\fR should never make use of
-caching; and, \*(lqask\*(rq, indicating that \fImhshow\fR should ask
-the user.
-
+that
+.B mhshow
+should make use of the user's private content cache;
+\*(lqnever\*(rq, indicating that
+.B mhshow
+should never make use of
+caching; and, \*(lqask\*(rq, indicating that
+.B mhshow
+should ask the user.
+.PP

 There are two directories where contents may be cached: the profile entry
 There are two directories where contents may be cached: the profile entry

-\fBnmh-cache\fR names a directory containing world-readable contents, and,
-the profile entry \fBnmh-private-cache\fR names a directory containing
+\*(lqnmh-cache\*(rq names a directory containing world-readable contents, and,
+the profile entry \*(lqnmh-private-cache\*(rq names a directory containing

 private contents.  The former should be an absolute (rooted) directory
 name.
 private contents.  The former should be an absolute (rooted) directory
 name.

-.ne 6
+.PP

 For example,
 For example,

-.sp
-.in +.5i
+.PP
+.RS 5

 nmh-cache: /tmp
 nmh-cache: /tmp

-.in -.5i
-.sp
+.RE
+.PP

 might be used if you didn't care that the cache got wiped after each
 reboot of the system.  The latter is interpreted relative to the user's
 might be used if you didn't care that the cache got wiped after each
 reboot of the system.  The latter is interpreted relative to the user's

-nmh directory, if not rooted,
-.ne 6
-e.g.,
-.sp
-.in +.5i
+nmh directory, if not rooted, e.g.,
+.PP
+.RS 5

 nmh-private-cache: .cache
 nmh-private-cache: .cache

-.in -.5i
-.sp
+.RE
+.PP

 (which is the default value).
 (which is the default value).

-
-.Uh "User Environment"
-Because the display environment in which \fImhshow\fR operates may vary for
-different machines, \fImhshow\fR will look for the environment variable
-\fB$MHSHOW\fR.  If present, this specifies the name of an additional
+.SS "User Environment"
+Because the display environment in which
+.B mhshow
+operates may vary for
+different machines,
+.B mhshow
+will look for the environment variable
+.BR $MHSHOW .
+If present, this specifies the name of an additional

 user profile which should be read.  Hence, when a user logs in on a
 particular display device, this environment variable should be set to
 refer to a file containing definitions useful for the given display device.
 Normally, only entries that deal with the methods to display different
 content type and subtypes
 user profile which should be read.  Hence, when a user logs in on a
 particular display device, this environment variable should be set to
 refer to a file containing definitions useful for the given display device.
 Normally, only entries that deal with the methods to display different
 content type and subtypes

-.sp
-.in +.5i
+.PP
+.RS 5
+.nf

 mhshow-show-<type>/<subtype>
 mhshow-show-<type>/<subtype>

-.br

 mhshow-show-<type>
 mhshow-show-<type>

-.in -.5i
-.sp
-need be present in this additional profile.
-Finally,
-\fImhshow\fR will attempt to consult one other additional user profile,
-.ne 6
+.fi
+.RE
+.PP
+need be present in this additional profile. Finally,
+.B mhshow
+will attempt to consult one other additional user profile,

 e.g.,
 e.g.,

-.sp
-.in +.5i
+.PP
+.RS 5

 %etcdir%/mhn.defaults
 %etcdir%/mhn.defaults

-.in -.5i
-.sp
-which is created automatically during nmh installation.
-.Fi
+.RE
+.PP
+which is created automatically during
+.B nmh
+installation.
+
+.SH FILES
+.fc ^ ~
+.nf
+.ta \w'%etcdir%/ExtraBigFileName  'u

 ^$HOME/\&.mh\(ruprofile~^The user profile
 ^$MHSHOW~^Additional profile entries
 ^%etcdir%/mhn.defaults~^System default MIME profile entries
 ^%etcdir%/mhl.headers~^The headers template
 ^$HOME/\&.mh\(ruprofile~^The user profile
 ^$MHSHOW~^Additional profile entries
 ^%etcdir%/mhn.defaults~^System default MIME profile entries
 ^%etcdir%/mhl.headers~^The headers template

-.Pr
+.fi
+
+.SH "PROFILE COMPONENTS"
+.fc ^ ~
+.nf
+.ta 2.4i
+.ta \w'ExtraBigProfileName  'u

 ^Path:~^To determine the user's nmh directory
 ^Path:~^To determine the user's nmh directory

-.Ps

 ^Current\-Folder:~^To find the default current folder
 ^Current\-Folder:~^To find the default current folder

-.Ps

 ^Unseen\-Sequence:~^To name sequences denoting unseen messages
 ^Unseen\-Sequence:~^To name sequences denoting unseen messages

-.Ps

 ^mhlproc:~^Default program to display message headers
 ^mhlproc:~^Default program to display message headers

-.Ps

 ^nmh-access-ftp:~^Program to retrieve contents via FTP
 ^nmh-access-ftp:~^Program to retrieve contents via FTP

-.Ps

 ^nmh-cache~^Public directory to store cached external contents
 ^nmh-cache~^Public directory to store cached external contents

-.Ps

 ^nmh-private-cache~^Personal directory to store cached external contents
 ^nmh-private-cache~^Personal directory to store cached external contents

-.Ps

 ^mhshow-charset-<charset>~^Template for environment to render character sets
 ^mhshow-charset-<charset>~^Template for environment to render character sets

-.Ps

 ^mhshow-show-<type>*~^Template for displaying contents
 ^mhshow-show-<type>*~^Template for displaying contents

-.Ps

 ^moreproc:~^Default program to display text/plain content
 ^moreproc:~^Default program to display text/plain content

-.Sa
+.fi
+
+.SH "SEE ALSO"

 mhbuild(1), mhl(1), mhlist(1), mhstore(1), sendfiles(1)
 mhbuild(1), mhl(1), mhlist(1), mhstore(1), sendfiles(1)

-.br
-RFC\-934:
-.br
-   \fIProposed Standard for Message Encapsulation\fR,
-.br
-RFC\-2045:
-.br
-   \fIMultipurpose Internet Mail Extensions (MIME) Part One:
-.br
-   Format of Internet Message Bodies\fR,
-.br
-RFC\-2046:
-.br
-   \fIMultipurpose Internet Mail Extensions (MIME) Part Two:
-.br
-   Media Types\fR,
-.br
-RFC\-2047:
-.br
-   \fIMultipurpose Internet Mail Extensions (MIME) Part Three:
-.br
-   Message Header Extensions for Non-ASCII Text\fR,
-.br
-RFC\-2048:
-.br
-   \fIMultipurpose Internet Mail Extensions (MIME) Part Four:
-.br
-   Registration Procedures\fR,
-.br
-RFC\-2049:
-.br
-   \fIMultipurpose Internet Mail Extensions (MIME) Part Five:
-.br
-   Conformance Criteria and Examples\fR.
-.De
-`+folder' defaults to the current folder
-.Ds
-`msgs' defaults to cur
-.Ds
-`\-nocheck'
-.Ds
-`\-form mhl.headers'
-.Ds
-`\-pause'
-.Ds
-`\-rcache ask'
-.Ds
-`\-realsize'
-.Ds
-`\-noserialonly'
-.Ds
-`\-noverbose'
-.Ds
-`\-wcache ask'
-.Co
+
+.SH DEFAULTS
+.nf
+.RB ` +folder "' defaults to the current folder"
+.RB ` msgs "' defaults to cur"
+.RB ` \-nocheck '
+.RB ` \-form mhl.headers '
+.RB ` \-pause '
+.RB ` \-rcache ask '
+.RB ` \-realsize '
+.RB ` \-noserialonly '
+.RB ` \-noverbose '
+.RB ` \-wcache ask '
+.fi
+
+.SH CONTEXT

 If a folder is given, it will become the current folder.  The last
 message selected will become the current message.
 If a folder is given, it will become the current folder.  The last
 message selected will become the current message.

-.En