Sony PRS-T1 User Manual page 106

 If you experience difficulties when handwriting or drawing
on the Reader:
 avoid applying excessive pressure to the
touchscreen.
 try not to handwrite or draw too quickly.
 this functionality is not designed for very detailed
drawings or for writing small characters.
To delete a drawn line
Tap (Erase) and drag across the drawn line.
Press the
reading.
Tip
 To delete all annotations in the current book, press the
(Menu) button
 To delete annotations across all books, use the [All Notes]
application. See Details.
Table of Contents
(Back) button when you are done to continue

tap [Notes]. See Details.
Reading Books
106