X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=man%2Fcurs_kernel.3x;h=5518d2d1d1279c2585ba4d606b8f668b4e041ae1;hp=505ea1eee8e7336cdc8112430f3e23fff6448b99;hb=97cb42f22c43eb31a4bf11475bd73ab0e0b10923;hpb=58552e8c761a70f8f0bd591fecdf576fa8216e3e

diff --git a/man/curs_kernel.3x b/man/curs_kernel.3x
index 505ea1ee..5518d2d1 100644
--- a/man/curs_kernel.3x
+++ b/man/curs_kernel.3x
@@ -1,5 +1,5 @@
 .\"***************************************************************************
-.\" Copyright (c) 1998-2016,2017 Free Software Foundation, Inc.              *
+.\" Copyright (c) 1998-2017,2018 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            *
@@ -26,9 +26,14 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
-.\" $Id: curs_kernel.3x,v 1.22 2017/01/07 19:25:15 tom Exp $
+.\" $Id: curs_kernel.3x,v 1.26 2018/07/28 23:04:00 tom Exp $
+.ie \n(.g .ds `` \(lq
+.el       .ds `` ``
+.ie \n(.g .ds '' \(rq
+.el       .ds '' ''
 .de bP
-.IP \(bu 4
+.ie n  .IP \(bu 4
+.el    .IP \(bu 2
 ..
 .TH curs_kernel 3X ""
 .na
@@ -73,54 +78,69 @@
 \fBint napms(int \fP\fIms\fP\fB);\fR
 .br
 .SH DESCRIPTION
-The following routines give low-level access to various \fBcurses\fR
-capabilities.  These routines typically are used inside library
-routines.
+The following routines give low-level access
+to various \fBcurses\fR capabilities.
+These routines typically are used inside library routines.
 .SS def_prog_mode, def_shell_mode
 .PP
 The \fBdef_prog_mode\fR and \fBdef_shell_mode\fR routines save the
 current terminal modes as the "program" (in \fBcurses\fR) or "shell"
 (not in \fBcurses\fR) state for use by the \fBreset_prog_mode\fR and
-\fBreset_shell_mode\fR routines.  This is done automatically by
-\fBinitscr\fR.  There is one such save area for each screen context
+\fBreset_shell_mode\fR routines.
+This is done automatically by \fBinitscr\fR.
+There is one such save area for each screen context
 allocated by \fBnewterm\fR.
 .SS reset_prog_mode, reset_shell_mode
 .PP
 The \fBreset_prog_mode\fR and \fBreset_shell_mode\fR routines restore
 the terminal to "program" (in \fBcurses\fR) or "shell" (out of
-\fBcurses\fR) state.  These are done automatically by \fBendwin\fR(3X)
-and, after an \fBendwin\fR, by \fBdoupdate\fR, so they normally are
-not called.
+\fBcurses\fR) state.
+These are done automatically by \fBendwin\fR(3X) and,
+after an \fBendwin\fR, by \fBdoupdate\fR,
+so they normally are not called.
 .SS resetty, savetty
 .PP
 The \fBresetty\fR and \fBsavetty\fR routines save and restore the
-state of the terminal modes.  \fBsavetty\fR saves the current state in
+state of the terminal modes.
+\fBsavetty\fR saves the current state in
 a buffer and \fBresetty\fR restores the state to what it was at the
 last call to \fBsavetty\fR.
 .SS getsyx
 .PP
-The \fBgetsyx\fR routine returns the current coordinates of the virtual screen
-cursor in \fIy\fR and \fIx\fR.  If \fBleaveok\fR is currently \fBTRUE\fR, then
-\fB\-1\fR,\fB\-1\fR is returned.  If lines have been removed from the top of the
+The \fBgetsyx\fR routine returns the current coordinates
+of the \fIvirtual screen\fP cursor in \fIy\fR and \fIx\fR.
+If \fBleaveok\fR is currently \fBTRUE\fR, then
+\fB\-1\fR,\fB\-1\fR is returned.
+If lines have been removed from the top of the
 screen, using \fBripoffline\fR, \fIy\fR and \fIx\fR include these lines;
 therefore, \fIy\fR and \fIx\fR should be used only as arguments for
 \fBsetsyx\fR.
+.PP
+Few applications will use this feature,
+most use \fBgetyx\fP instead.
 .SS setsyx
 .PP
-The \fBsetsyx\fR routine sets the virtual screen cursor to
-\fIy\fR, \fIx\fR.  If \fIy\fR and \fIx\fR are both \fB\-1\fR, then
-\fBleaveok\fR is set.  The two routines \fBgetsyx\fR and \fBsetsyx\fR
+The \fBsetsyx\fR routine sets
+the \fIvirtual screen\fP cursor to \fIy\fR, \fIx\fR.
+If \fIy\fR and \fIx\fR are both \fB\-1\fR, then
+\fBleaveok\fR is set.
+The two routines \fBgetsyx\fR and \fBsetsyx\fR
 are designed to be used by a library routine, which manipulates
 \fBcurses\fR windows but does not want to change the current position
-of the program's cursor.  The library routine would call \fBgetsyx\fR
+of the program's cursor.
+The library routine would call \fBgetsyx\fR
 at the beginning, do its manipulation of its own windows, do a
 \fBwnoutrefresh\fR on its windows, call \fBsetsyx\fR, and then call
 \fBdoupdate\fR.
+.PP
+Few applications will use this feature,
+most use \fBwmove\fP instead.
 .SS ripoffline
 .PP
 The \fBripoffline\fR routine provides access to the same facility that
 \fBslk_init\fR [see \fBcurs_slk\fR(3X)] uses to reduce the size of the
-screen.  \fBripoffline\fR must be called before \fBinitscr\fR or
+screen.
+\fBripoffline\fR must be called before \fBinitscr\fR or
 \fBnewterm\fR is called, to prepare these initial actions:
 .bP
 If \fIline\fR is positive, a line is removed from the top of \fBstdscr\fR.
@@ -138,9 +158,8 @@ an integer with the number of columns in the window.
 .PP
 Inside this initialization routine, the integer variables \fBLINES\fR
 and \fBCOLS\fR (defined in \fB<curses.h>\fR) are not guaranteed to be
-accurate and \fBwrefresh\fR or \fBdoupdate\fR must not be called.  It
-is allowable to call \fBwnoutrefresh\fR during the initialization
-routine.
+accurate and \fBwrefresh\fR or \fBdoupdate\fR must not be called.
+It is allowable to call \fBwnoutrefresh\fR during the initialization routine.
 .PP
 \fBripoffline\fR can be called up to five times before calling \fBinitscr\fR or
 \fBnewterm\fR.
@@ -148,9 +167,10 @@ routine.
 .PP
 The \fBcurs_set\fR routine sets the cursor state to invisible,
 normal, or very visible for \fBvisibility\fR equal to \fB0\fR,
-\fB1\fR, or \fB2\fR respectively.  If the terminal supports the
-\fIvisibility\fR requested, the previous \fIcursor\fR state is
-returned; otherwise, \fBERR\fR is returned.
+\fB1\fR, or \fB2\fR respectively.
+If the terminal supports the \fIvisibility\fR requested,
+the previous \fIcursor\fR state is returned;
+otherwise, \fBERR\fR is returned.
 .SS napms
 .PP
 The \fBnapms\fR routine is used to sleep for \fIms\fR milliseconds.
@@ -180,8 +200,9 @@ exceeds the maximum (NRIPS = 5).
 Note that \fBgetsyx\fR is a macro, so \fB&\fR is not necessary before
 the variables \fIy\fR and \fIx\fR.
 .PP
-Older SVr4 man pages warn that the return value of \fBcurs_set\fR "is currently
-incorrect".  This implementation gets it right, but it may be unwise to count
+Older SVr4 man pages warn that the return value
+of \fBcurs_set\fR \*(``is currently incorrect\*(''.
+This implementation gets it right, but it may be unwise to count
 on the correctness of the return value anywhere else.
 .PP
 Both ncurses and SVr4 will call \fBcurs_set\fR in \fBendwin\fR
@@ -191,11 +212,13 @@ invisible or very visible.
 There is no way for ncurses to determine the initial cursor state to
 restore that.
 .SH PORTABILITY
-The functions \fBsetsyx\fR and \fBgetsyx\fR are not described in the XSI
-Curses standard, Issue 4.  All other functions are as described in XSI Curses.
+The \fIvirtual screen\fP functions \fBsetsyx\fR and \fBgetsyx\fR
+are not described in the XSI Curses standard, Issue 4.
+All other functions are as described in XSI Curses.
 .PP
-The SVr4 documentation describes \fBsetsyx\fR and \fBgetsyx\fR as having return
-type int. This is misleading, as they are macros with no documented semantics
+The SVr4 documentation describes \fBsetsyx\fR and \fBgetsyx\fR
+as having return type int.
+This is misleading, as they are macros with no documented semantics
 for the return value.
 .SH SEE ALSO
 \fBcurses\fR(3X),