199 lines
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HTML
199 lines
11 KiB
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<meta name="DC.Title" content="MLTCHCFLD (Multiple-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 multiple-choice selection field." />
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<meta name="description" content="Use this field-level keyword to define a field as a multiple-choice selection field." />
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<meta name="DC.subject" content="MLTCHCFLD (Multiple-Choice Selection Field) keyword, Multiple-Choice Selection Field (MLTCHCFLD) keyword, multiple-choice selection field, creating, keyword" />
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<title>MLTCHCFLD (Multiple-Choice Selection Field) keyword for display files</title>
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</head>
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<body id="rzakcmstmltchcf"><a name="rzakcmstmltchcf"><!-- --></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">MLTCHCFLD (Multiple-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 multiple-choice
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selection field.</p>
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<div class="section"><p>A multiple-choice selection field is a field that contains a fixed
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number of choices from which a user can select multiple choices. The field
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appears as a vertical or horizontal list of choices, an input field to the
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left of each choice, or as a group of check boxes.</p>
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<p>If you see an input
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field, instead of a check box to the left of each choice, the selection character
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default value is a slash (/). Message CPX5A0C contains the country-designated
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selection characters. The value can be changed to allow alternate selection
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characters for a multiple-choice selection field. These characters are the
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allowed uppercase or lowercase country-designated selection characters. The
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characters are defined when the display file is created.</p>
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<div class="p">The format
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of the keyword is: <pre>MLTCHCFLD[([*RSTCSR | *NORSTCSR]
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[*NOSLTIND | *SLTIND]
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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
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none are specified, the multiple-choice selection field choices will be arranged
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in a single vertical column. The user will be allowed to move the selection
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cursor out of this field using the arrow keys. There will be three spaces
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between choices and selection indicators will be displayed.</p>
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<p>The RSTCSR
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parameter specifies whether the arrow keys should be allowed to move the selection
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cursor outside of the selection field. <samp class="codeph">*RSTCSR</samp> specifies
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that the arrow keys will not cause the selection cursor to move outside of
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the selection field. <samp class="codeph">*NORSTCSR</samp> specifies that the arrow keys
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will cause the selection cursor to leave the selection field. The default
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is <samp class="codeph">*NORSTCSR</samp>.</p>
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<div class="note"><span class="notetitle">Note:</span> An exception to the restrictions imposed
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by <samp class="codeph">*RSTCSR</samp> happens if the selection field is the only field
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contained within a pull-down window. In that case, when the selection cursor
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is within the leftmost or rightmost columns, the left and right arrow keys
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will close the current pull-down window and open the pull-down window associated
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with the menu-bar choice to the left or right of the current menu-bar choice.</div>
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<p>The <samp class="codeph">*RSTCSR</samp> parameter
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is ignored on displays that are not connected to a controller that supports
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an enhanced interface for nonprogrammable workstations.</p>
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<p>The SLTIND parameter
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indicates whether selection indicators (such as check boxes) should be displayed. <samp class="codeph">*NOSLTIND</samp> specifies
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that the selection indicators should not be displayed. The default is <samp class="codeph">*SLTIND</samp>.</p>
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<div class="p"><samp class="codeph">*NUMCOL</samp> specifies
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that this selection field should be displayed in multiple columns with the
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choices spread across the columns in this manner: <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 multiple-choice selection field
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must be able to fit on the display when placed in the specified number of
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columns.</p>
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<div class="p"><samp class="codeph">*NUMROW</samp> specifies that this selection field
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should be displayed in multiple rows with the choices spread across the columns
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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 multiple-choice selection field
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must be able to fit on the display when placed in the specified number of
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rows.</p>
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<p>The *GUTTER parameter is optional and specifies the number of
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spaces to be placed between each column of the multiple-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 immediately follow the (*NUMxxx #) parameter. The gutter-width must be
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a positive integer of at least 2. If *GUTTER is not specified, the default
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of gutter-width is set to three spaces.</p>
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<p>A field containing
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the MLTCHCFLD keyword must contain one or more CHOICE and CHCCTL keywords
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defining the choices for the field.</p>
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<p>The field containing the MLTCHCFLD
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keyword must be defined as an input-capable field with the data type Y and
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length of two. The position specified for the field is the position of the
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input field displayed to the left of the first choice or of the uppermost
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check box. If *NOSLTIND is used on the PULLDOWN keyword and the device is
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attached to a controller that supports an enhanced interface for nonprogrammable
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workstations, the position is the first character of the text for the first
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choice. On input, the field contains the number of the choices selected, or
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0 if no choice was selected. On output, the value of the field is ignored.</p>
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<p>Provide
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a minimum of two spaces between the end of the previous field and the position
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specified for the multiple choice field. This allows an ending attribute for
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the previous field, and a beginning attribute for the multiple choice field.
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These attributes cannot overlap.</p>
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<p>The following keywords can be specified
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on a field with the MLTCHCFLD 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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BLANKS<br />
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CHANGE<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, FE)<sup>2</sup><br />
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CHOICE</p>
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</td>
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<td valign="top" width="50%"><p>CHGINPDFT<br />
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COLOR<sup>3</sup><br />
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FLDCSRPRG<br />
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DSPATR(RI UL BL CS HI ND PC)<sup>3</sup><br />
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ERRMSG<br />
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ERRMSGID<br />
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INDTXT<br />
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OVRATA<br />
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OVRATR<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 multiple-choice selection field is displayed
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in a pull-down menu that does not display selection indicators, when PULLDOWN(*NOSLTIND)
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is 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 MLTCHCFLD
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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 MLTCHCFLD 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 F1 2Y 0B 3 35MLTCHCFLD
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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 CHCCTL(1 &CTLONE1 MSG1111 QUSER/A)
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A CHCCTL(2 &CTLTWO1 &MSG1 &LIB/&MSGF);
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A CHCCTL(3 &CTLTHR1);
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A CTLONE1 1Y 0H
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A CTLTWO1 1Y 0H
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A CTLTHR1 1Y 0H
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A MSGF 10A P
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A LIB 10A P
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A MARKTXT 10A P
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A</pre>
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<p>The CHCCTL keyword is required for each CHOICE keyword
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used for the MLTCHCFLD.</p>
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<p>On input, the hidden field for the CHCCTL keyword
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indicates whether the choice was selected. 0 indicates the choice was not
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selected; 1 indicates the choice was selected. On output, the hidden field
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controls the availability of the choice, and is used to set a default selection
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of a choice. 0 indicates the choice should be available, 1 indicates the choice
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should be selected by default, and 2 indicates the choice is unavailable.
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Other values, such as 0, are truncated.</p>
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</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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