This image shows the Canonical Rules dialog box. It contains a combo box that shows how 3 characters are decomposed. The column headings are:
PreComposed Form (the character encoding)
Decomposed Form (the character encoding)
An example of a decomposed character is given in the text following image.
Below the combo box is a row of text fields with the same headings as the combo box. The text fields are blank. Below the text fields are the following buttons:
An OK button appears in the lower corner of the dialog box. End of image description.