X-Git-Url: http://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=man%2Fclear.1;h=3ee012a3f51c8b45e10f21a2a167dcb2e6a9c838;hb=3f57ad09dfcb62c8ad444e13fa4d450c05e878ba;hp=6b611da26d829808f90b2ef3b15cef7f67287041;hpb=cccf831ed7c83410c7f6cec2a43e71e9c4278b4c;p=ncurses.git

diff --git a/man/clear.1 b/man/clear.1
index 6b611da2..3ee012a3 100644
--- a/man/clear.1
+++ b/man/clear.1
@@ -1,5 +1,6 @@
 .\"***************************************************************************
-.\" Copyright (c) 1998-2017,2018 Free Software Foundation, Inc.              *
+.\" Copyright 2018-2021,2022 Thomas E. Dickey                                *
+.\" Copyright 1998-2016,2017 Free Software Foundation, Inc.                  *
 .\"                                                                          *
 .\" Permission is hereby granted, free of charge, to any person obtaining a  *
 .\" copy of this software and associated documentation files (the            *
@@ -26,7 +27,7 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
-.\" $Id: clear.1,v 1.20 2018/05/19 21:03:03 tom Exp $
+.\" $Id: clear.1,v 1.27 2022/02/12 20:07:29 tom Exp $
 .TH @CLEAR@ 1 ""
 .\" these would be fallbacks for DS/DE,
 .\" but groff changed the meaning of the macros.
@@ -41,7 +42,8 @@
 .de NE
 .fi
 .ft R
-.in -4
+.ie n  .in -4
+.el    .in -2
 ..
 .ie \n(.g .ds `` \(lq
 .el       .ds `` ``
@@ -53,33 +55,33 @@
 ..
 .ds n 5
 .SH NAME
-\fB@CLEAR@\fR \- clear the terminal screen
+\fB@CLEAR@\fP \- clear the terminal screen
 .SH SYNOPSIS
-\fB@CLEAR@\fR [\fB\-T\fR\fItype\fR] [\fB\-V\fP] [\fB\-x\fP]
+\fB@CLEAR@\fR [\fB\-T\fItype\fR] [\fB\-V\fR] [\fB\-x\fR]
 .br
 .SH DESCRIPTION
-\fB@CLEAR@\fR clears your screen if this is possible,
-including its scrollback buffer
+\fB@CLEAR@\fP clears your terminal's screen if this is possible,
+including the terminal's scrollback buffer
 (if the extended \*(``E3\*('' capability is defined).
-\fB@CLEAR@\fR looks in the environment for the terminal type
+\fB@CLEAR@\fP looks in the environment for the terminal type
 given by the environment variable \fBTERM\fP,
 and then in the
-\fBterminfo\fR database to determine how to clear the screen.
+\fBterminfo\fP database to determine how to clear the screen.
 .PP
-\fB@CLEAR@\fR writes to the standard output.
+\fB@CLEAR@\fP writes to the standard output.
 You can redirect the standard output to a file (which prevents
-\fB@CLEAR@\fR from actually clearing the screen),
+\fB@CLEAR@\fP from actually clearing the screen),
 and later \fBcat\fP the file to the screen, clearing it at that point.
 .SH OPTIONS
 .PP
 .TP 5
 .B \-T \fItype\fP
-indicates the \fItype\fR of terminal.
+indicates the \fItype\fP of terminal.
 Normally this option is
 unnecessary, because the default is taken from the environment
-variable \fBTERM\fR.
-If \fB\-T\fR is specified, then the shell
-variables \fBLINES\fR and \fBCOLUMNS\fR will also be ignored.
+variable \fBTERM\fP.
+If \fB\-T\fP is specified, then the shell
+variables \fBLINES\fP and \fBCOLUMNS\fP will also be ignored.
 .TP
 .B \-V
 reports the version of ncurses which was used in this program, and exits.
@@ -115,7 +117,7 @@ BSD \fBclear\fP command (with terminfo, of course).
 .PP
 The \fBE3\fP extension came later:
 .bP
-In June 1999, xterm provided an extension to the standard control
+In June 1999, \fBxterm\fP provided an extension to the standard control
 sequence for clearing the screen.
 Rather than clearing just the visible part of the screen using
 .NS
@@ -128,17 +130,18 @@ printf '\\033[\fB3\fPJ'
 .NE
 .IP
 This is documented in \fIXTerm Control Sequences\fP as a feature originating
-with xterm.
+with \fBxterm\fP.
 .bP
 A few other terminal developers adopted the feature, e.g., PuTTY in 2006.
 .bP
 In April 2011, a Red Hat developer submitted a patch to the Linux
 kernel, modifying its console driver to do the same thing.
-The Linux change, part of the 3.0 release, did not mention xterm,
+The Linux change, part of the 3.0 release, did not mention \fBxterm\fP,
 although it was cited in the Red Hat bug report (#683733)
 which led to the change.
 .bP
-Again, a few other terminal developers adopted the feature.  But the
+Again, a few other terminal developers adopted the feature.
+But the
 next relevant step was a change to the \fBclear\fP program in 2013
 to incorporate this extension.
 .bP
@@ -154,7 +157,7 @@ The latter documents \fBtput\fP, which could be used to replace this utility
 either via a shell script or by an alias (such as a symbolic link) to
 run \fB@TPUT@\fP as \fB@CLEAR@\fP.
 .SH SEE ALSO
-\fB@TPUT@\fR(1), \fBterminfo\fR(\*n)
+\fB@TPUT@\fP(1), \fBterminfo\fP(\*n), \fBxterm\fP(1).
 .PP
-This describes \fBncurses\fR
+This describes \fBncurses\fP
 version @NCURSES_MAJOR@.@NCURSES_MINOR@ (patch @NCURSES_PATCH@).