192 lines
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HTML
192 lines
10 KiB
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<meta name="DC.Title" content="SNGCHCFLD (Single-Choice Selection Field) keyword for display files" />
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<meta name="abstract" content="Use this field-level keyword to define a field as a single-choice selection field." />
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<meta name="description" content="Use this field-level keyword to define a field as a single-choice selection field." />
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<meta name="DC.subject" content="SNGCHCFLD (Single-Choice Selection Field) keyword, Single-Choice Selection Field (SNGCHCFLD) keyword, single-choice selection field, defining" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2001, 2006" />
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<title>SNGCHCFLD (Single-Choice Selection Field) keyword for display files</title>
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<body id="rzakcmstsngchc"><a name="rzakcmstsngchc"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">SNGCHCFLD (Single-Choice Selection Field) keyword for display files</h1>
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<div><p>Use this field-level keyword to define a field as a single-choice
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selection field.</p>
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<div class="section"><p>A single-choice selection field is a field that contains a fixed
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number of choices from which a user can select one choice. The field appears
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as a vertical list of choices, with a single input field at the upper left,
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or as a group of radio buttons.</p>
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<div class="p">The format of this keyword is: <pre>SNGCHCFLD[([*NORSTCSR | *RSTCSR]
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[*NOAUTOSLT | *AUTOSLT | *AUTOSLTENH]
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[*NOSLTIND | *SLTIND]
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[*NOAUTOENT | *AUTOENT | *AUTOENTNN]
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[[(*NUMCOL nbr-of-cols) | (*NUMROW nbr-of-rows)]
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[(*GUTTER gutter-width)]])]</pre>
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</div>
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<p>Parameters are optional. If none are specified, the single-choice
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field choices will be arranged in a single vertical column. The user will
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be allowed to move the selection cursor out of this field using the arrow
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keys.</p>
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<p>The RSTCSR parameter specifies whether the arrow keys should be
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allowed to move the selection cursor outside of the selection field. *RSTCSR
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specifies that the arrow keys will not cause the selection cursor to move
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outside of the selection field. *NORSTCSR specifies that the arrow keys will
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cause the selection cursor to leave the selection field. The default is *NORSTCSR.</p>
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<div class="note"><span class="notetitle">Note:</span> An
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exception to the restrictions imposed by *RSTCSR happens if the selection
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field is the only field contained within a pull-down window. In that case,
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when the selection cursor is within the leftmost or rightmost columns, the
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left and right arrow keys will close the current pull-down window and open
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the pull-down window associated with the menu-bar choice to the left or right
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of the current menu-bar choice.</div>
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<p>The *RSTCSR parameter is ignored
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on displays that are not connected to a controller that supports an enhanced
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interface for nonprogrammable workstations.</p>
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<p>The
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AUTOSLT parameter indicates if the ENTER key should automatically select the
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choice currently being indicated by the selection cursor. *NOAUTOSLT
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indicates that the user must select the choice. *AUTOSLTENH indicates that
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auto-select is only in effect if the device is connected to an enhanced controller.
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The default is <samp class="codeph">*AUTOSLT.</samp></p>
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<p>The SLTIND parameter indicates
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whether selection indicators (such as radio buttons) should be displayed.
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*NOSLTIND specifies that the selection indicators should not be displayed.
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The default is <samp class="codeph">*SLTIND</samp>.</p>
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<p>Auto-enter
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will cause the record to be returned as soon as a choice is selected (as if
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the user had also pressed the enter key). The AUTOENT parameter indicates
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to what extent Auto-Enter should be enabled. *NOAUTOENT indicates that no
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auto-enter will be in effect. *AUTOENT will enable auto-enter on all displays
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unless a double digit selection number is required for any of the choices.
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*AUTOENTNN will enable auto-enter only if numeric selection of the choices
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is not required. If not specified, this parameter is set to *NOAUTOENT as
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default.</p>
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<div class="p">*NUMCOL specifies that this selection field should be displayed
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in multiple columns with the choices spread across the columns in this manner:
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<pre>choice1 choice2 choice3
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choice4 choice5 choice6
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choice7 choice8 choice9</pre>
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</div>
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<p>The nbr-of-cols portion of the
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parameter specifies how many columns the selection field should contain. Nbr-of-cols
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must be a positive integer and the entire single-choice selection field must
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be able to fit on the display when placed in the specified number of columns.</p>
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<div class="p">*NUMROW
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specifies that this selection field should be displayed in multiple rows with
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the choices spread across the columns in this manner: <pre>choice1 choice4 choice7
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choice2 choice5 choice8
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choice3 choice6 choice9</pre>
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</div>
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<p>The nbr-of-rows portion of the
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parameter specifies how many rows the selection field should contain. Nbr-of-rows
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must be a positive integer and the entire single-choice selection field must
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be able to fit on the display when placed in the specified number of rows.</p>
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<p>The *GUTTER parameter is optional and specifies the number
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of spaces to be placed between columns of the single-choice selection field.
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It can only be specified if either *NUMCOL or *NUMROW has been specified and
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must follow the (*NUMxxx #) parameter. The gutter-width must be a positive
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integer of at least 2. If *GUTTER is not specified, the default of gutter-width
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is set to three spaces (including leading and trailing choice text attributes).</p>
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<p>A
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field containing the SNGCHCFLD keyword must also contain one or more CHOICE
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keywords defining the choices for the field.</p>
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<p>The field containing the
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SNGCHCFLD keyword must be defined as an input-capable field with data type
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Y, length equal to 2, and zero decimal positions. The position specified for
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the field is the position of the input field displayed to the left of the
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first choice, or of the uppermost radio button. On input, the field contains
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the number of the choice selected, or 0 if no choice was selected. On output,
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if the field contains a choice number, that choice is displayed as the default
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selection.</p>
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<p>Provide a minimum of two spaces between the end of the previous
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field and the position specified for the single choice field. This allows
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an ending attribute for the previous field, and a beginning attribute for
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the single choice field. These attributes cannot overlap.</p>
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<p>The following
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keywords can be specified on a field with the SNGCHCFLD keyword:</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="void" border="0" rules="none"><tbody><tr><td valign="top" width="50%"><p>ALIAS<br />
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AUTO(RA)<br />
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CHANGE<br />
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CHCACCEL<br />
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CHCAVAIL<br />
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CHCUNAVAIL<br />
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CHCSLT<sup>1</sup><br />
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CHCCTL<br />
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CHECK(ER)<sup>2</sup><br />
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CHECK(FE)<sup>3</sup></p>
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</td>
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<td valign="top" width="50%"><p>CHOICE<br />
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CHGINPDFT<br />
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COLOR<sup>4</sup><br />
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DSPATR(RI UL BL CS HI ND PC)<sup>4</sup><br />
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ERRMSG<br />
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ERRMSGID<br />
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INDTXT<br />
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PUTRETAIN<br />
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TEXT</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="note"><span class="notetitle">Notes:</span> <ol><li>CHCSLT functions only if the single-choice selection field is displayed
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in a pull-down menu that does not display selection indicators (for example,
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PULLDOWN(*NOSLTIND) specified).</li>
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<li>Check(ER) is not allowed with SNGCHCFLD if the AUTOENT or AUTOENTNN parameters
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have been specified.</li>
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<li>Check(FE) applies only to a display attached to a controller that does
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not support an enhanced interface.</li>
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<li>If the COLOR or DSPATR keyword is specified for a field with the SNGCHCFLD
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keyword, it applies only to the input field portion of the selection field
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on character-based displays.</li>
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</ol>
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</div>
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<p>Option indicators are not valid for this keyword.</p>
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</div>
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<div class="example"><h4 class="sectiontitle">Example</h4><p>The following example shows how to specify
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the SNGCHCFLD keyword:</p>
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<pre>|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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A
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A R RECORD
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A :
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A :
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A 3 3'Single selection field. :'
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A F1 2Y 0B 3 35SNGCHCFLD
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A 01 CHOICE(1 '>Undo ')
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A CHOICE(2 &MARKTXT);
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A CHOICE(3 '>Copy ')
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A MARKTXT 10A P
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A</pre>
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<p>In this example, when using a graphical display station
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attached to a controller that supports an enhanced interface for nonprogrammable
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workstations, the selection fields look like this:</p>
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<br /><img src="rv2w864.gif" alt="A figure of the example specification displayed on
a graphical display station." /><br /></div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakcmstkeyent.htm" title="You type the keyword entries that define display files in positions 45 through 80 (functions).">DDS keyword entries for display files (positions 45 through 80)</a></div>
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</div>
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</div>
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</body>
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</html>
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