Editing Aqua (user interface) (section)

==== Progress indicators ====
Two main types of loading/saving progress indicator are available: a progress bar or a monochromatic spinning wheel (not the [[spinning pinwheel]]). The progress bar itself is available in two varieties: indeterminate, which simply shows diagonal blue and white stripes in animation with no measure of progress; or determinate, which shows a blue pulsing bar against a white background proportional to the percentage of a task completed. The spinning wheel indicator, also found in the Mac OS X startup screen since version 10.2, is simply a series of 12 increasingly darker grey lines arranged circularly, like the side view of a [[spoke]]d wheel rotating clockwise. Many other interfaces have adopted this device, including the [[Firefox]] and [[Camino (web browser)|Camino]] web browsers and many [[Web 2.0]]-influenced web sites.

In Yosemite, the progress bar was changed to a thin, light gray. The "indeterminate" variation kept the pulses, but slower and spaced out. A progress indicator now appears during boot, replacing the spinning wheel indicator found in earlier versions.