• GNOME Desktop Accessibility Guide
• General Accessibility Tips
• Accessible Login
• Starting Assistive Technologies at Login

Edit the AccessKeyMouseEvents file to associate keyboard shortcuts with assistive technologies. For example, the following lines enable you to press and hold Ctrl+S or Ctrl+M for one second to either start speech or magnification:

<Control>s 1 1000 10000 /usr/bin/orca -n -d main-window

<Control>m 1 1000 10000 /usr/bin/orca -n -d main-window -e magnifier