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+ fix several formatting issues with manual pages. + correct read of terminfo entry in which all strings are absent or explicitly cancelled. Before this fix, the result was that all were treated as only absent. + modify infocmp to suppress mixture of absent/cancelled capabilities that would only show as "NULL, NULL", unless the -q option is used, e.g., to show "-, @" or "@, -".
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240 lines
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* @Id: panel.3x,v 1.21 2017/02/18 16:53:23 tom Exp @
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
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<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
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<meta name="generator" content="Manpage converted by man2html - see http://invisible-island.net/scripts/readme.html#others_scripts">
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<TITLE>panel 3x</TITLE>
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<link rev=made href="mailto:bug-ncurses@gnu.org">
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<H1 class="no-header">panel 3x</H1>
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<PRE>
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<STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG> <STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
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</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
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panel - panel stack extension for curses
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</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
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<STRONG>#include</STRONG> <STRONG><panel.h></STRONG>
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<STRONG>cc</STRONG> <STRONG>[flags]</STRONG> <STRONG>sourcefiles</STRONG> <STRONG>-lpanel</STRONG> <STRONG>-lncurses</STRONG>
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<STRONG>PANEL</STRONG> <STRONG>*new_panel(WINDOW</STRONG> <STRONG>*win);</STRONG>
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<STRONG>int</STRONG> <STRONG>bottom_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
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<STRONG>int</STRONG> <STRONG>top_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
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<STRONG>int</STRONG> <STRONG>show_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
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<STRONG>void</STRONG> <STRONG>update_panels();</STRONG>
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<STRONG>int</STRONG> <STRONG>hide_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
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<STRONG>WINDOW</STRONG> <STRONG>*panel_window(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
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<STRONG>int</STRONG> <STRONG>replace_panel(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*window);</STRONG>
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<STRONG>int</STRONG> <STRONG>move_panel(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>int</STRONG> <STRONG>starty,</STRONG> <STRONG>int</STRONG> <STRONG>startx);</STRONG>
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<STRONG>int</STRONG> <STRONG>panel_hidden(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
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<STRONG>PANEL</STRONG> <STRONG>*panel_above(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
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<STRONG>PANEL</STRONG> <STRONG>*panel_below(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
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<STRONG>int</STRONG> <STRONG>set_panel_userptr(PANEL</STRONG> <STRONG>*pan,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*ptr);</STRONG>
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<STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*panel_userptr(const</STRONG> <STRONG>PANEL</STRONG> <STRONG>*pan);</STRONG>
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<STRONG>int</STRONG> <STRONG>del_panel(PANEL</STRONG> <STRONG>*pan);</STRONG>
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</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
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Panels are <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG> windows with the added feature of
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depth. Panel functions allow the use of stacked windows
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and ensure the proper portions of each window and the
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curses <STRONG>stdscr</STRONG> window are hidden or displayed when panels
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are added, moved, modified or removed. The set of cur-
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rently visible panels is the stack of panels. The <STRONG>stdscr</STRONG>
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window is beneath all panels, and is not considered part
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of the stack.
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A window is associated with every panel. The panel rou-
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tines enable you to create, move, hide, and show panels,
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as well as position a panel at any desired location in the
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stack.
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Panel routines are a functional layer added to <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>,
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make only high-level curses calls, and work anywhere ter-
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minfo curses does.
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</PRE><H2><a name="h2-FUNCTIONS">FUNCTIONS</a></H2><PRE>
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<STRONG>new_panel(win)</STRONG>
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allocates a <STRONG>PANEL</STRONG> structure, associates it with
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<STRONG>win</STRONG>, places the panel on the top of the stack
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(causes it to be displayed above any other
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panel) and returns a pointer to the new panel.
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<STRONG>update_panels</STRONG>
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refreshes the virtual screen to reflect the rela-
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tions between the panels in the stack, but does not
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call <STRONG>doupdate</STRONG> to refresh the physical screen. Use
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this function and not <STRONG>wrefresh</STRONG> or <STRONG>wnoutrefresh</STRONG>.
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<STRONG>update_panels</STRONG> may be called more than once before a
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call to <STRONG>doupdate</STRONG>, but <STRONG>doupdate</STRONG> is the function
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responsible for updating the physical screen.
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<STRONG>del_panel(pan)</STRONG>
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removes the given panel from the stack and deallo-
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cates the <STRONG>PANEL</STRONG> structure (but not its associated
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window).
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<STRONG>hide_panel(pan)</STRONG>
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removes the given panel from the panel stack and
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thus hides it from view. The <STRONG>PANEL</STRONG> structure is not
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lost, merely removed from the stack.
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<STRONG>panel_hidden(pan)</STRONG>
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returns <STRONG>TRUE</STRONG> if the panel is in the panel stack,
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<STRONG>FALSE</STRONG> if it is not. If the panel is a null
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pointer, return ERR.
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<STRONG>show_panel(pan)</STRONG>
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makes a hidden panel visible by placing it on top
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of the panels in the panel stack. See COMPATIBILITY
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below.
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<STRONG>top_panel(pan)</STRONG>
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puts the given visible panel on top of all panels
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in the stack. See COMPATIBILITY below.
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<STRONG>bottom_panel(pan)</STRONG>
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puts panel at the bottom of all panels.
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<STRONG>move_panel(pan,starty,startx)</STRONG>
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moves the given panel window so that its upper-left
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corner is at <STRONG>starty</STRONG>, <STRONG>startx</STRONG>. It does not change
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the position of the panel in the stack. Be sure to
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use this function, not <STRONG>mvwin</STRONG>, to move a panel win-
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dow.
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<STRONG>replace_panel(pan,window)</STRONG>
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replaces the current window of panel with <STRONG>window</STRONG>
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(useful, for example if you want to resize a panel;
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if you're using <STRONG>ncurses</STRONG>, you can call <STRONG>replace_panel</STRONG>
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on the output of <STRONG><A HREF="wresize.3x.html">wresize(3x)</A></STRONG>). It does not change
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the position of the panel in the stack.
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<STRONG>panel_above(pan)</STRONG>
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returns a pointer to the panel above pan. If the
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panel argument is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a pointer
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to the bottom panel in the stack.
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<STRONG>panel_below(pan)</STRONG>
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returns a pointer to the panel just below pan. If
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the panel argument is <STRONG>(PANEL</STRONG> <STRONG>*)0</STRONG>, it returns a
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pointer to the top panel in the stack.
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<STRONG>set_panel_userptr(pan,ptr)</STRONG>
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sets the panel's user pointer.
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<STRONG>panel_userptr(pan)</STRONG>
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returns the user pointer for a given panel.
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<STRONG>panel_window(pan)</STRONG>
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returns a pointer to the window of the given panel.
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</PRE><H2><a name="h2-DIAGNOSTICS">DIAGNOSTICS</a></H2><PRE>
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Each routine that returns a pointer returns <STRONG>NULL</STRONG> if an
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error occurs. Each routine that returns an int value
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returns <STRONG>OK</STRONG> if it executes successfully and <STRONG>ERR</STRONG> if not.
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</PRE><H2><a name="h2-COMPATIBILITY">COMPATIBILITY</a></H2><PRE>
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Reasonable care has been taken to ensure compatibility
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with the native panel facility introduced in SVr3.2
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(inspection of the SVr4 manual pages suggests the program-
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ming interface is unchanged). The <STRONG>PANEL</STRONG> data structures
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are merely similar. The programmer is cautioned not to
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directly use <STRONG>PANEL</STRONG> fields.
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The functions <STRONG>show_panel</STRONG> and <STRONG>top_panel</STRONG> are identical in
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this implementation, and work equally well with displayed
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or hidden panels. In the native System V implementation,
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<STRONG>show_panel</STRONG> is intended for making a hidden panel visible
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(at the top of the stack) and <STRONG>top_panel</STRONG> is intended for
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making an already-visible panel move to the top of the
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stack. You are cautioned to use the correct function to
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ensure compatibility with native panel libraries.
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</PRE><H2><a name="h2-NOTE">NOTE</a></H2><PRE>
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In your library list, libpanel.a should be before libn-
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curses.a; that is, you should say "-lpanel -lncurses", not
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the other way around (which would give a link-error with
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static libraries).
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</PRE><H2><a name="h2-FILES">FILES</a></H2><PRE>
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panel.h interface for the panels library
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libpanel.a the panels library itself
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</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
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<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>,
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This describes <STRONG>ncurses</STRONG> version 6.0 (patch 20170218).
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</PRE><H2><a name="h2-AUTHOR">AUTHOR</a></H2><PRE>
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Originally written by Warren Tucker <wht@n4hgf.mt-
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park.ga.us>, primarily to assist in porting u386mon to
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systems without a native panels library. Repackaged for
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ncurses by Zeyd ben-Halim.
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<STRONG><A HREF="panel.3x.html">panel(3x)</A></STRONG>
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</PRE>
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<div class="nav">
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<ul>
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<li><a href="#h2-NAME">NAME</a></li>
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<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
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<li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
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<li><a href="#h2-FUNCTIONS">FUNCTIONS</a></li>
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<li><a href="#h2-DIAGNOSTICS">DIAGNOSTICS</a></li>
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<li><a href="#h2-COMPATIBILITY">COMPATIBILITY</a></li>
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<li><a href="#h2-NOTE">NOTE</a></li>
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<li><a href="#h2-FILES">FILES</a></li>
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<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
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<li><a href="#h2-AUTHOR">AUTHOR</a></li>
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</ul>
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