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2.2. The Voluntary Product Accessibility Template (VPAT)
The VPAT template details how a particular product or service conforms to Section 508 criteria. The VPAT helps federal personnel adhere to Section 508 by helping them determine whether they are buying the most accessible IT products and services available. The VPAT template participation by private vendors is voluntary. These templates are hosted on the individual vendor websites. The vendors maintain their own information and the government does not endorse this information in any way.
Speakup is a screen review package written by Kirk Reiser and Andy Berdan and available under a free license. Speakup gives users with visual or mobility impairments the ability to have audible console feedback using a speech synthesizer. Speakup is useful to blind users because it provides an audible installation and is fully supported by the blind open source community.
Emacspeak is a speech interface that allows visually impaired users to interact independently and efficiently with the computer. Emacspeak has dramatically changed how hundreds of blind and visually impaired users around the world interact with the personal computer and the Internet. A rich suite of task-oriented speech-enabled tools provides efficient speech-enabled access to the evolving semantic world wide web. When combined with Linux running on low-cost PC hardware, Emacspeak provides a reliable, stable speech-friendly solution that opens up the Internet to visually impaired users around the world.
Before using Emacspeak, you should familiarize yourself with some documentation. Start with A Gentle Introduction to Emacspeak by Gary Lawrence Murphy, which is available online at http://tldp.org/LDP/espk-ug/html/index.html
At various points, the following sections refer to the Meta key. This key is fundamental to Emacs (and therefore Emacspeak) commands, but is very seldom found on modern keyboards. Most keyboard layouts map the Alt key to take the place of Meta.
4.3.1. 使用Emacspeak阅读新闻
Gnus is the news reader included with Emacspeak. Gnus gets the appropriate data from the .newsrc file in the user's home directory. To post and read news through Emacspeak, refer to http://www.gnus.org/ for manuals, tutorials, HOWTOs, and more. To start Gnus, press Meta+X, then type gnus and press Enter.
This command displays all the newsgroups you are subscribed to. To select a newsgroup, highlight your selection and press the space bar. Next, specify how many articles you would like to open: type a number and press Enter. This splits the screen into two buffers. The top section is the summary buffer, the bottom section is the article buffer. You should now be able to read your news.
4.3.2. 使用Emacspeak发送和阅读邮件
There are several email clients available in Emacspeak. The Gnus utility can actually be used for both email and news. Press Meta+X to start Gnus, then press M to use the mail client.
The easiest tool to use is RMAIL. To send a message using RMAIL, Press Ctrl+X, followed by M
Fill in the To: and Subject: fields. Put the body of the message below the line that reads -text follows this line-. To send the message when you are finished, press Ctrl+C twice in succession.
It is not necessary to leave Emacspeak to execute a Linux command. To execute a command within Emacspeak, press Esc, then type ! followed by the name of the command when Emacspeak prompts you. To exit the command output window, press Ctrl+X, followed by 1
This functionality is extremely useful. You can even print and compile files you are working on within Emacspeak. For more information on Linux shell commands refer to Josh's Linux Guide or any other comparable command resource.
A program for KDE, KMouseTool provides an alternate method for clicking the mouse by clicking the mouse whenever the cursor pauses and even provides a dragging capability. KMouseTool works with any mouse or pointing device.
Similar to KDE's KMouseTool, GNOME's Mousetweaks provides the ability to doubleclick, dwell clicks, and pointer capture. Additional information on Mousetweaks can be found at http://library.gnome.org/users/mousetweaks/
