Progress bar can be used either in a dialog as a cancel note or in a narrow bar in the bottom right-handcorner of the Application Area.
When it appears in a dialog, the background dims. When the narrow progress bar is used, the background remains ''active'' and can be viewed and scrolled.
-shows that time has elapsed when the total time of an operation can be estimated
-the progression is indicated by numbers or percentage, and a dynamic bar
-located in the centre of the screen and dims the background OR in the bottom right-hand corner of the screen
-the text resides in front of the progress bar
-background not dimmed