Elmo CRA-1 - Manual (Page 26)

Drawing
(1)
Select the pen to use from and
on the right of the screen.
Caution
The button is different according to the setting.
(2)
Drag to draw.
Deleting
(1)
If you only want to delete part of the drawings, align the cursor with the
area that you want to delete and press side button 2, or drag while
pressing side button 1.
Caution
You cannot delete a part of a continuous line.
(2)
To delete all the lines on a screen, press .
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