Initial commit, very few changes from orca 45. Added xfce4-notification daemon support.
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help/C/howto_tables.page
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help/C/howto_tables.page
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<page xmlns="http://projectmallard.org/1.0/" type="topic" id="howto_tables">
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<info>
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<link type="guide" xref="index#reading"/>
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<link type="next" xref="howto_forms" />
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<title type="sort">4. Tables</title>
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<desc>
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Navigating and setting dynamic headers
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</desc>
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<credit type="author">
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<name>Joanmarie Diggs</name>
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<email>joanied@gnome.org</email>
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</credit>
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<license>
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<p>Creative Commons Share Alike 3.0</p>
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</license>
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</info>
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<title>Tables</title>
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<p>
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<app>Orca</app> provides several features specifically designed to improve
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access to tables found in web pages and other documents: configurable cell
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versus row reading, <link xref="howto_structural_navigation">Structural
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Navigation</link> and Dynamic Headers.
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</p>
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<section id="cell_row">
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<title>Cell Versus Row Reading</title>
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<p>
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Consider the process of examining the list of messages in your Inbox.
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In order to have Orca announce the sender, subject, date, and presence
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of attachments you would need <app>Orca</app> to speak the row. On the
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other hand, when navigating amongst rows in a spreadsheet, hearing the
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full row may not be desired if for no other reason than the sheer number
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of cells in each row. Thus in that case, you would want <app>Orca</app>
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to only speak the cell with focus. Similar situations occur in document
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tables.
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</p>
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<p>
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<app>Orca</app> allows you to customize whether only the cell should be
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read, or if the full row should be, for GUI tables, document tables,
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and spreadsheets. Because these settings are independent of one another,
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you do not have to choose one table reading mode to fit multiple types of
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tables.
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</p>
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<p>
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You can set each of <app>Orca</app>'s table reading preferences <app>Orca</app>
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wide as well as on an application-by-application basis. How to do each is
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described in the guide on <link xref="preferences"><app>Orca</app>'s preferences
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dialogs</link>. The settings can be found on the <link xref="preferences_speech">
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<gui>Speech</gui> page</link>.
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</p>
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<p>
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Lastly, there is also an <app>Orca</app> command which allows you to toggle
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cell versus row reading on the fly for the currently-active table:
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<keyseq><key>Orca Modifier</key><key>F11</key></keyseq>.
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</p>
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</section>
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<section id="structural_navigation">
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<title>Structural Navigation</title>
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<p>
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<app>Orca</app>'s <link xref="commands_structural_navigation#tables">table
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Structural Navigation commands</link> make it possible for you to quickly
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locate tables, jump immediately to a table's first or last cell, and
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move to the next cell in any direction.
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</p>
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<p>
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As you navigate amongst and within tables using Structural Navigation,
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<app>Orca</app> will announce additional details to help you understand
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your position, such as the dimensions of the table you just entered and
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the fact that you have reached the edge of the table in the direction you
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are moving.
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</p>
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<p>
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In addition, <app>Orca</app> provides configurable
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<link xref="preferences_table_navigation">presentation options</link>
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which work in conjunction with Structural Navigation and allow you to
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control whether or not cell coordinates are presented, multiple cell spans
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are indicated, and cell headers are announced.
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</p>
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<note style="tip">
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<title>Don't Forget To Toggle Structural Navigation On!</title>
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<p>
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Depending on where you are, it may be necessary for you to explicitly
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toggle Structural Navigation on before you can use it. To learn more, read
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<link xref="howto_structural_navigation#toggling_required">
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when toggling Structural Navigation on is required.</link>
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</p>
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</note>
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</section>
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<section id="dynamic_headers">
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<title>Dynamic Headers</title>
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<p>
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Many of the tables you will encounter while reading have cells which serve
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as the header for a row or a column. Whether or not the creator of that
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table correctly marked those cells as headers is hard to say. In many
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cases, the text was simply formatted to be larger and/or bold. And even if
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the table is correctly marked up, that is no guarantee that the application
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or toolkit exposes that text as header information to assistive technologies.
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<app>Orca</app>'s Dynamic Header support makes it possible to overcome these
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challenges.
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</p>
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<steps>
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<title>Setting Column Headers</title>
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<item>
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<p>
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Move to the row which contains all of the column headers.
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</p>
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</item>
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<item>
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<p>
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Press <keyseq><key>Orca Modifier</key><key>R</key></keyseq> to tell
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<app>Orca</app> that the current row is the one with the headers.
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</p>
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</item>
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</steps>
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<steps>
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<title>Setting Row Headers</title>
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<item>
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<p>
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Move to the column which contains all of the row headers.
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</p>
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</item>
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<item>
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<p>
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Press <keyseq><key>Orca Modifier</key><key>C</key></keyseq> to tell
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<app>Orca</app> that the current column is the one with the headers.
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</p>
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</item>
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</steps>
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<p>
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Having set either the column headers or the row headers, you should find
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that as you navigate amongst the cells, <app>Orca</app> will present each
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header that has changed. Or to put it another way, <app>Orca</app> will
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not present the column header over and over again as you move up or down
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within the current column. Likewise, it will not present the row header
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over and over again as you move left or right within the current row.
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However, if you change rows and there are row headers, the header
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associated with the new row will be presented. And if you change columns
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and there are column headers, the header associated with the new column
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will be presented.
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</p>
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<p>
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To clear headers, simply double-click the command you used to set them.
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Thus double-clicking <keyseq><key>Orca Modifier</key><key>R</key></keyseq>
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tells <app>Orca</app> there are no column headers. Double-clicking
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<keyseq><key>Orca Modifier</key><key>C</key></keyseq> tells <app>Orca</app>
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there are no row headers.
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</p>
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</section>
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</page>
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