- From: Becky Gibson <Becky_Gibson@notesdev.ibm.com>
- Date: Tue, 3 Jan 2006 17:51:57 -0500
- To: public-wcag-teamb@w3.org
Here is a draft of a general technique for success criterion 1.3.6: Information required to understand and operate content does not rely on shape, size, visual location, or orientation of components. (Level 3) Providing textual identification of items that otherwise rely only on shape, size and/or position to be understood. Applicability All technologies which allow the creation of various shaped objects and backgrounds or allow objects to be explicitly positioned within the delivery unit. Description Creating objects of varying shapes, sizes and locations within the delivery unit is useful for providing visual and navigational clues. Additional ways to convey information must also be provided. For example: -providing a textual description of the object which describes its function. -providing a textual label that identifies the object. -providing both textual and/or shape size, orientation or position information. Example 1: A round green button is provided on a form to submit the form and move onto the next step in a progression. The button is labeled with the text "go." The instructions would state, "to submit the form press the round, green button which is labeled, "go". This includes both shape, color and textual information to locate the button. Example 2: A shopping cart provides a numbered list of items the user has selected for purchase. A user may remove an item from the shopping cart by activating a button to the right of each item which is marked with an image of a circle with a slash through it. Next to each button is also the textual description, "remove item" followed by the item number. The instructions indicate, "to remove an item from your cart, press the button to the right of the item which is marked with a circle and slash through it. The description of the button also contains the item number." This example uses shape (the circle with a slash through it), location, and a textual description to allow all users to locate the correct button. Example 3: A real estate site provides a bar chart of average housing prices in several regions of the United States. The description of the bar chart indicates that the legend for the graph is provided to the right of the graph under the heading, "Legend for Regional Home Prices". The location and the text heading are provided to allow users to find and navigate to the legend. In addition, the legend uses both colors and hatch marks to indicate the different bars and each bar is individually labeled within the graph. Resources: Tests: 1) Manually review the delivery unit for items which are differentiated by shape, size, or position. For each such item determine: a) if the item can be located and identified using only text without any knowledge of the shape, size, or relative position of the item. Fail: the item can not be identified using only text. Add a textual description to the reference which makes identification possible. Pass: the item can be identified using only text. Additional shape, size and/or relative position information may also be included. Procedure Expected Result: All items in the content can be located and identified using only text without any knowledge of the shape, size or relative position of the item. Test Files Becky Gibson Web Accessibility Architect IBM Emerging Internet Technologies 5 Technology Park Drive Westford, MA 01886 Voice: 978 399-6101; t/l 333-6101 Email: gibsonb@us.ibm.com
Received on Tuesday, 3 January 2006 23:38:28 UTC