Outsourcing agreements (known by multiple terms, mainly local marketing agreements (LMA), shared services agreements (SSA) or joint sales agreements (JSA), albeit with little differentiation in their structure) have allowed some broadcasting companies to operate stations that they could otherwise not legally own outright due to in-market ownership regulations; these arrangements first began in 1991, when the Sinclair Broadcast Group entered into such an arrangement to run WPTT (now WPNT) in Pittsburgh, after it sold the station to its manager Edwin Edwards to acquire Fox affiliate WPGH-TV.