MAT supports the notion of spanless
annotations, which aren't directly anchored to a text span.
The UI provides special facilities for editing such annotations.
If your task contains spanless annotations, your window will look
like this when you open a document:
Note the blank region immediately to the left of the document
text. This is the spanless sidebar. In this region, you'll
create and operate on spanless annotations in a manner quite
similar to the text area.
To create a spanless annotation, click in any blank region of the
You'll see a popup menu very similar to the menu you'd get if you
were to swipe text in the document. When you swipe text, your
popup menu contains only the spanned annotations you can create;
analogously, when you click in the spanless sidebar, your popup
menu contains only the spanless annotations. Notice, too, that the
spanless labels are styled, just like the spanned annotations are.
When you create a spanless annotation, an icon is created, styled
appropriately, and placed in the spanless sidebar. The location of
this icon is dictated by the annotation attribute values the
annotation points to; the UI will attempt to place the icon
halfway between the first and last spanned annotations the
spanless annotation points to. If the spanless annotation doesn't
point to any annotations yet (as will be the case when it's
created, usually), it will be placed at the top of the document.
In order to facilitate editing this annotation, and so you don't
have to go looking for its icon, spanless annotations will
automatically open an annotation editor.
At this point, you can select or create the annotation attribute
values, or otherwise edit the annotation.
Once you have created a spanless annotation, you can click on its
icon in the spanless sidebar to obtain a popup menu analogous to
the popup menu for spanned annotations. From this menu, you can
delete the annotation, or edit or view the annotation. When you
hover over the spanless icon, it will highlight its annotation
attribute values, just as a spanned annotation would. You can also
view it in the annotation tables, and scroll to it just as you
would for a spanned annotation.
Spanless annotations also interact seamlessly with
annotation-valued attributes and choose mode. You can select
attribute values for such an annotation just as you would for
spanned annotations. Similarly, if you're viewing an annotation
which can be a value of an spanless annotation attribute, you can
select or create a spanless annotation which it's a value of by
interacting with the spanless sidebar to create or select a