Indexed options work similarly to traditional stock options, with one exception: Rather than having the exercise price fixed at the market price on the date of grant, the exercise price varies based on the change in an appropriate stock market index, e.g.

FORBES: How To Salvage Stock Options

Now layer on e-commerce, with mobile technology enabling real-time price comparisons, and the exercise of pricing becomes even more complicated.

FORBES: Retail's Big Question: Is The Price Right?

"D-Man in the Waters" (1989), an often frantically busy exercise performed in Ms. Prince's olive-drab costuming to Mendelssohn's effervescent Octet for Strings in E-Flat Major, began life as a showcase honoring a company dancer then ravaged by AIDS. It remains a thin, derivative work that looks back here and there in its diving-to-the-stage energy to Paul Taylor's masterly, heart-pumping, Bach-inspired 1975 "Esplanade, " as well as to Mark Morris's evocative and momentous 1981 "Gloria" (to Vivaldi).

WSJ: The Only Good Part Is the Music | Bill T. Jones/Arnie Zane Dance Company | 'Play and Play: An Evening of movement and Music | Joyce Theater | By Robert Greskovic