In regular expression syntax, the vertical bar again indicates logical or.

The bars indicate the path which rectangular icons cascade down towards a horizontal line near the bottom of the screen.

The bar over the characteristic indicates that it is negative whilst the mantissa remains positive.

The two vertical bars indicated a absolute value; the sign (positive or negative) of is ignored.

A bar can indicate a coming tropical cyclone.

The bars he wore on his collar indicated that the dead man was a captain.

The gray and white bars on top of the cluster indicate the proliferation state of the samples.

A bar underneath the circle indicates that only mild cleaning processes should be used.

The shrinking bar indicates the time remaining in that colour.

A red and white bar across the bottom of the screen indicates battle advantage.