Sometimes there is non-text content that really is not meant to be seen or understood by the user. Transparent images used to move text over on a page; an invisible image that is used to track usage statistics; and a swirl in the corner that conveys no information but just fills up a blank space to create an aesthetic effect are all examples of this.
Putting alternative text on such items just distracts people using screen readers from the content on the page. Not marking the content in any way, though, leaves users guessing what the non-text content is and what information they may have missed even though they have not missed anything in reality.
This type of non-text content, therefore, is marked or implemented in a way that assistive technologies AT will ignore it and not present anything to the user. A bar chart compares how many widgets were sold in June, July, and August. Where possible and practical, the actual data is provided in a table. An audio recording of a speech. The link to an audio clip says, "Chairman's speech to the assembly.
An animation that illustrates how a car engine works. An animation shows how a car engine works. There is no audio and the animation is part of a tutorial that describes how an engine works. Since the text of the tutorial already provides a full explanation, the image is an alternative for text and the text alternative includes only a brief description of the animation and refers to the tutorial text for more information.
A Web site allows users to select from a variety of Web cameras positioned throughout a major city. After a camera is selected, the image updates every two minutes. A short text alternative identifies the Web camera as "traffic Web camera. The table is also updated every two minutes. A photograph of an historic event in a news story. A photograph of two world leaders shaking hands accompanies a news story about an international summit meeting. A photograph of a historic event in content discussing diplomatic relationships.
The same image is used in a different context intended to explain nuances in diplomatic encounters. The image of the president shaking hands with the prime minister appears on a Web site discussing intricate diplomatic relationships.
The additional description might be included on the same page as the photograph or in a separate file associated with the image through a link or other standard programmatic mechanism. An audio recording of a press conference. A Web page includes a link to an audio recording of a press conference. The link text identifies the audio recording. The page also links to a text transcript of the press conference. The transcript includes a verbatim record of everything the speakers say.
It identifies who is speaking as well as noting other significant sounds that are part of the recording, such as applause, laughter, questions from the audience, and so on. An e-learning application. An e-learning application uses sound effects to indicate whether or not the answers are correct.
The chime sound indicates that the answer is correct and the beep sound indicates that the answer is incorrect. A text description is also included so that people who can't hear or understand the sound understand whether the answer is correct or incorrect. A linked thumbnail image. A thumbnail image of the front page of a newspaper links to the home page of the "Smallville Times".
The text alternative says "Smallville Times". The same image used on different sites. Different alternatives for an image of the world: An image of the world that is used on a travel site as a link to the International Travel section has the text alternative "International Travel".
The same image is used as a link on a university Web site with the text alternative "International Campuses". An image map. An image of a building floor plan is interactive, allowing the user to select a particular room and navigate to a page containing information about that room. The short text alternative describes the image and its interactive purpose: "Building floor plan.
Select a room for more information. Each numbered item in this section represents a technique or combination of techniques that the WCAG Working Group deems sufficient for meeting this Success Criterion. List-view control A standard Windows list box control that displays a set of objects. The control also supports different views and drag-and-drop operations.
See also drop-down menu, shortcut menu. See also drop-down menu. For drop-down menus, the label is the entry in the menu bar; for cascading menus, the menu label is the name of its parent menu command. Compare dialog box, palette window, and property sheet. See also maximize. A secondary window can be modal with respect to its primary window or to the entire system.
Compare modeless. Compare modal. Also used as a generic term to include other pointing devices that operate similarly for example, trackballs and digital pens. See also child window, parent window. Compare extended-selection list box, single-selection list box.
Represents objects, containers, etc. These commands are included in a shortcut menu displayed at the destination where the object is dropped. Compare drag-and-drop operation. Also: a self-contained collection of data and properties and its associated processing.
Compare check box. Compare inside-out activation. Compare dialog box and message box. See also property sheet.
Parallel construction is particularly necessary for items in lists and groups of check-box labels or option-button labels. See also child window and multiple-document interface. To position the pointer over a particular object and location. See also secondary window and window. Compare context-sensitive Help, reference Help, and task-oriented Help. Includes hourglass mouse pointer, progress bars, and. See also hourglass and progress bar. Compare property sheet.
Compare dialog box, property inspector. See also property page. Compare context-sensitive Help, procedural Help, and task-oriented Help.
For example, selections made in separate windows are typically considered to be independent of each other. The direction of the arrow indicates the direction in which the information scrolls. Clicking in the scroll bar shaft scrolls the information screen by screen. See also scroll box. The user can drag the scroll box to view areas of information not currently visible.
See also scroll bar shaft. Compare drop-down combo box. See also primary window and window. Usage Use instead of choose in the UI. When using the verb set up , spell with two words.
Set up and install are generally interchangeable. Setup as a noun is a single word. The menu contains commands that are contextually relevant to the selection. Compare text box. See also dynamic text field and text field. A FileTable enforces certain system-defined constraints and triggers to maintain file namespace semantics. This provides file system access for Windows applications. The file and directory data stored in a FileTable is exposed through a Windows share for non-transactional file access for Windows API based applications.
For a Windows application, this looks like a normal share with its files and directories. Applications can use a rich set of Windows APIs to manage the files and directories under this share. The directory hierarchy surfaced through the share is a purely logical directory structure that is maintained within the FileTable. Calls to create or change a file or directory through the Windows share are intercepted by a SQL Server component and reflected in the corresponding relational data in the FileTable.
Windows API operations are non-transactional in nature, and are not associated with user transactions. They are also integrated with SQL Server management tools, and features such as backup.
You are unable to send an email request through dbmail and attach a file located in a filestream directory and therefore filetable.
If the request is not both from the SQLServer executable and Filestream code, they are explicitly disallowed. FileTables do not support memory-mapped files. Notepad and Paint are two common examples of applications that use memory-mapped files.
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