To add a comment, click the 
button. A dialog box opens for entering a comment.
The number of characters in the comment is limited.
The following parameters can be configured:
- Position of comment in the frame (the window with the comment is movable by dragging the window title).
- Transparency of comment window, by adjusting the
slider from left to right (from opaque to maximum transparency). - Marking the area of interest in the frame, with a dot (
), semicircle (
), or rectangle (
). To do so: - Click the relevant button and then click anywhere in the frame. The selected element is displayed.
- Drag the element to the necessary place in the frame. To do so, left-click and drag the edge of the area (or for a dot, click and drag the dot).
- Set the size by dragging the corner points.
To save the comment, click the Save button. Otherwise, click 
to cancel.
After being saved, a comment is displayed in the frame as specified. To delete the comment, before you perform any other command in the system, click the button..
