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tabbing browsing
Users who do not or cannot use pointing devices can use the shortcut tab key to open the connection, and they must also have a logical tab order. Although HTML is linear, the tabindex attribute allows you to define the order of its shortcut keys, and these logical tabs should automatically fall into their positions.
Shortcut keys
Shortcut keys allow for easier navigation via specific keys on the keyboard (to gain focus when holding down the Alt key or Ctrl key). For those who don't have a pointing device, it's faster and more convenient than using the tab key to connect.
It is not necessary to set shortcut keys for every connection, but it is a good idea to set them for the main navigation connections.
Some page
Note
The trouble with shortcut keys is that users often have no way of knowing where they are and what exactly are the keys (unless looking at the source code). Although JAWS, a screen reader that can read shortcuts aloud, to get the most out of it, you still have to make the shortcuts more straightforward.
You can use linking techniques like "skip navigation" (detailed below), or choose a separate page to illustrate these usability-related features of your site, including shortcut keys. An increasingly popular method is to underline a letter that corresponds to the shortcut key, similar to the method in Windows program menus.
Title of the link
It is a good idea to add the title attribute to the link. This will give the user a description of the link to which they are pointing, so it can improve navigation.
If this connection is executing Javascript, it is also helpful to explain to users who do not use Javascript functionality what will (or will not) happen.