At the same time, a transition from stock companies, in which a resident acting company was based around a star or impresario, to a "combination" system, in which productions were put together on a one-time basis to mount a specific play, expanded the amount of outside support needed to service the theatrical industry. Thus, suppliers of props, costumes, wigs, scenery, and other theatrical necessities grew up around the new theatres. The new system also needed an organized way to engage actors for these one-off productions, so talent brokers and theatrical agents sprang up, as did theatrical boardinghouses, stage photographers, publicity agencies, theatrical printers and play publishers. Along with the hotels and restaurants which serviced the theatregoers and shoppers of the area, the Union Square Rialto was, by the end of the century, a thriving theatrical neighborhood, which would soon nonetheless migrate uptown to what became known as "Broadway" as the Rialto became subsumed into the more vice-oriented Tenderloin entertainment district.