For any event you've set, you can enter a comment freely as you wish.

To enter a comment, select an event for which you want to enter a comment, click in the [Comment] area, and then enter any text directly from the keyboard. (Pressing the [Esc] key cancels the edit mode.)

After editing a comment, press the [Enter] key or move the focus to other than the editing area to complete your editing.

A comment can be entered in up to 256 characters, which is saved as the setting of the current user.