Beaus and Belles are terms used to identify dancers (i.e., identifiers). These identifiers are primarily used in defining calls. Leaders and Trailers are also identifiers, but for some odd reason, Leaders and Trailers are not explicitly on a Callerlab list as is the case with Beaus and Belles.

Choreographically, I've found that the usage of Beaus and Belles is primarily limited to the following calls: Run, Trade, U-Turn Back. Other applicable calls include Roll, 1/4 In, 1/4 Out, and Fold.

Here's some examples:

From Out-Facing Lines:

Beaus Run

From In-Facing Lines:

Belles Crossover Circulate

From Double Pass Thru:

Belles only Zoom

From Facing Couples:

Beaus do your part Wheel Thru

From Completed Double Pass Thru:

Beaus only Checkmate The Column

From Completed Double Pass Thru:

Beaus Right Roll To A Wave as Belles Zig-Zag

From Facing Couples:

Beaus Walk, Belles Dodge

From Parallel Two-Faced Lines:

Ferris Wheel, Beaus Roll