Built-in Mathematica Symbol

ProgressIndicator

ProgressIndicator[x]
represents a progress indicator with setting x in the range 0 to 1.

ProgressIndicator[Dynamic[x]]
takes the setting to be the dynamically updated current value of x.

ProgressIndicator[x, {x_min, x_max}]
represents a progress indicator with range x_min to x_max.

ProgressIndicator[x, Indeterminate]
represents a progress indicator with indeterminate range.

ProgressIndicator[...] displays in a notebook as a progress indicator going from left to right; it does not allow interactive modification.

ProgressIndicator[x, Indeterminate] displays as an object which changes whenever x changes. »

Appearance	Automatic	the overall appearance of the progress indicator
BaselinePosition	Automatic	alignment relative to surrounding text
BaseStyle	{}	base style for the progress indicator
ImageMargins	0	margins around the image of the progress indicator
ImageSize	Automatic	the overall image size of the progress indicator

The settings for BaseStyle are appended to the default style typically given by the "ProgressIndicator" style in the current stylesheet.

Create a progress indicator set at 0.8 in the default range 0 to 1: