To have an Invoice Screen open at the same time as an Sales Order Screen would be nice, and to be able to have multiple screens open would be nice as well, sometimes we are in the middle of working on a large invoice and have to stop because a customer comes in and wants to buy something. We are forced to post or sales order or invoice, just to open a new one for a customer. Would be nice if we could open an invoice even if we are in a sales order (without having to close what we are working on)