The signal "region-changed" is emitted by a screen reader to indicate that it is now reading or tracking a new object, or, a new piece of text within an object.
This allows a magnifier to gain the information needed to highlight the object that the screen reader is reading.
| arg1 |
an integer specifying the current offset of the text being read, if the object is textual. |
| arg2 |
an integer specifying the ending offset of the text being read, if the object is textual. |