NotesA note is a feedback component that informs the user about the currentsituation. A note contains a text and possibly a graphical element. The softkeylabels are typically empty (a wait note is an exception to this.)Figure 5-40. An information note.Notes do not require user input, although a user can dismiss most notes bypressing any key.The following note types are in use:confirmation note Informs the user about a successfully completedoperation. Short duration, subtle tone. (This shouldnot be used after every kind of successful action;see the guidelines below.)information note Gives information about an unexpected situationduring usage of the device. Longer duration andmore noticeable tone than in a confirmation note.Errors that are not too serious should cause aninformation note.warning note Used when the user must be notified aboutsomething that may require action. Fairly longduration, and a sound that can be heard (anddistinguished) even when not concentrating on thephone. An example: battery low warning.error note This is a red light. It should only be used when theuser has tried to do something that may cause aconsiderable problem. See the guidelines below.permanent note A note that must remain on screen for an indefinitetime. The user can't dismiss it. Example: insert SIMcard.wait note A note containing a progress or wait graphic. (Waitgraphic is an animation of indefinite duration,whereas progress graphic is a growing bar that canbe used when it is possible to estimate the durationof the operation.) Used during operations that takea long time. The user should be able to stop the56