I like the wheel and it is handy if you are only using one hand. I think
it could have real potential on a web page if it didn't change space
with dots 1 3 and 4 6, you could use the wheel for headings say nd the
space dots 1 3 and 4 6 for input controls giving extra navigation.
Louise.
On 28/04/2011 04:25, Alex Hall wrote:
Hi all,
Below I have pasted an article all about the Scroll Wheel. This is not
yet on the pbwiki site; it will probably wait until that site has
found its new home.
What is the Scroll Wheel?
On all Apex BT units (an Apex with a braille keyboard and a 0, 18, or
32 cell display) there is a circular construction between dots 1 and 4
on the keyboard. In its center is a sort of flattened dome shape, with
six lines radiating off of it. At the 12:00, 3:00, 6:00, and 9:00
positions around the outside of these lines there are dots, one at
each of the afore mentioned clock positions. These controls are known,
collectively, as the "scroll wheel" and are used for a variety of
tasks.
The Center Button
The center button, what was previously described as a flattened dome,
has several purposes. Which function it activates depends on where you
are in Keysoft, just as do the rest of the controls on the Wheel. When
in menus or on a webpage, the Center Button acts like the enter key.
When in a document, book, media file, or email, it will start or
pause. In documents or emails it will duplicate the space-g ("go
forward reading") keystroke each time it is pressed - it will not stop
speech, only start it. In media files, it will play or pause the
media.
The Wheel
The six lines coming out from the Center Button comprise the Wheel of
the Scroll Wheel. This Wheel can be turned clockwise (moving forward)
or counterclockwise (moving backward). The Wheel does not turn
smoothly; instead, it is designed to click as it moves, allowing for
precise scrolling or fast scrolling as necessary. A given line on the
Wheel will go through twelve clicks to return to its starting point,
just like the positions on a clock. Here are the functions moving this
Wheel can perform:
When in menus, each click of the wheel moves by one item.
When in a document (wordprocessor, book reader, email), each click
moves by the increment set with the Down Arrow. This can provide a
quick way to scroll through a file, but it is important to note that
your cursor will follow the movement. Pressing the inner thumb keys
will move the braille display but not the cursor, but moving the Wheel
will move the cursor along with the scrolling.
When on a webpage or in a database lookup (keylist, keybase, reviewing
network configurations, and so on), each click moves by the setting of
the Down Arrow.
The Arrow Keys
There are four dots, one at each cardinal direction of the Scroll
Wheel. They are known as "arrow keys" and are named, cleverly, for
their directions. The one at 12:00 is the Up Arrow, the one at 3:00 is
Right Arrow, and I will leave it to you to figure out the other two.
Left and Right Arrows
These two arrows will always take you to the top (Left Arrow) or
bottom (Right Arrow) of where you are (database lookup, webpage,
document, menu). They serve no other purpose.
The Up Arrow
The Up Arrow will always perform the standard exit command, the
equivalent of pressing space-e at any point in Keysoft.
The Down Arrow
The Down Arrow changes what the Wheel will scroll by. If there is
nothing to change, such as in a menu, it will perform the "help"
command, the equivalent of pressing space-h. Below is a (possibly
incomplete) list of possibilities for this button:
When in a document (wordprocessor, email, book) the Down Arrow toggles
between the Wheel moving by sentence and by paragraph.
When on a webpage, it toggles between the same options available by
pressing space-t; heading, link, input control, and so on. Note that
changing this will also change the function of space-4-6 and
space-1-3, so you cannot set the Wheel to move by one type of element
and the above keystrokes to move by another.
In a database lookup, such as in keybase or keylist, Down Arrow
toggles between field and record. If set to field, the Wheel will
scroll through the fields of the currently selected record. If set to
Record, it will scroll through all records in the set of results
returned by your query.
In the media player, while a file is playing, the Down Arrow switches
between 1, 5, and 10 percent increments.
Disabling the Scroll Wheel
Some users find that they never use the Wheel and/or that it gets in
the way, moving the braille display with even an accidental tap.
Fortunately, you can simply turn off the entire thing: press space-o
to enter the options menu, then press w to toggle the Wheel on and off
(if it is off, it will be turned on, and vice versa).
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