Identify the pointer position as the
anchor point.
Define the selection region to consist of the part
of elements (depending on the number of clicks), if any, containing
the pointer.
Define the anchor element to be the element in the
region nearest to the pointer.
Define the anchor region to be the selection region.
Place the active cursor as follows:
At the anchor point, if it can be
placed there
On the anchor element, if it is an element cursor
Where the cursor previously was in the scope, if
there is no anchor element
[ ]
When using a multilevel click or swipe technique:
Identify the pointer position at initiation
of the technique as the anchor point.
Define the selection region to consist of all elements
that would be selected when using the corresponding click or swipe
technique. Expand the selection region if all elements in its part
(depending on the number of presses) are also included in the region.
Define the anchor element to be the element in the
selection region nearest to the pointer.
Define the anchor region to be the selection region
that would be obtained if a multilevel point technique had been
used instead at the point at which the technique was initiated.
Place the active cursor as follows:
At the pointer position when the technique
was finished, if it can be placed there
On the element at the other end of the range from
the anchor element, if you are using an element cursor, the region
is not empty, and range technique is in effect
On an element within the selection region, if you
are using an element cursor, the region is not empty, and area technique
is in effect
On the last element touched, if you are using an
element cursor, the region is not empty, and touch technique is
in effect
Where the cursor previously was in the scope, if
none of the above are true
[ ]
When using a multilevel point, swipe, or click technique
in select mode:
Select all the elements in the selection
region.
Deselect all other elements in the scope.
[ ]
When using a multilevel point, swipe, or click technique
in toggle mode, toggle all elements in the selection region, based
on the toggling policy.
[ ]
When using an adjustment technique to adjust a selection
initially made using a multilevel technique, expand the selection
region so that if an element is in the region, all elements in its
part (depending on the number of times the SELECT button was pressed
in the initial technique) are also included in the region.
[ ]
When using a multilevel adjust click or swipe technique:
Identify the pointer position at initiation
of the technique as the anchor point.
Define the selection region to consist of all elements
that would be selected when using the corresponding adjust click
or swipe technique, but then expanded so that one of the following
occurs:
If an element is added to the region,
also include all elements in its part (depending on the number of
times the ADJUST button is pressed) in the region.
If an element is removed from the region, place
it back into the region, unless all elements in its part (depending
on the number of times the ADJUST button was pressed) are also included
in the region.
Define the anchor element to be the element in the
selection region nearest to the pointer.
Define the anchor region to be the selection region
that would be obtained if a multilevel point technique had been
used instead at the point at which the technique was initiated.
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