An order denying preliminary objections that seek to enforce an arbitration clause is an interlocutory order that is appealable as of right, and an arbitration clause incorporated into a brokerage agreement signed by an individual trustee is enforceable against the beneficiaries of the trust who assert claims against the broker for allegedly excessive fees and breach of contract. In Re: Estate of Joseph B. Atkinson Jr., 2020 PA Super 87 (4/6/2020).