Abstract: A negotiation panel can be provided to enable a buyer and a seller to exchange messages over a communication network. The contract term negotiation panel may identify a list of contract terms which are open for negotiation between the buyer and the seller. The computer system may provide the negotiation panel and the contract term negotiation panel to be functionally interrelated, by (i) parsing messages of the negotiation panel to detect a match condition with respect to a material term for the transaction, (ii) identifying a corresponding contract term displayed through the contract negotiation panel for the match condition, and (iii) indicating the corresponding contract term as complete.

Abstract: An online purchase transaction system facilitates commencement, listing, selection, negotiation, documenting, closing and recording of complex transactions. The system allows for completion of transactions, such as commencement of a real estate listing through transfer with minimal or no direct third-party human intervention, thus maximizing cost savings and minimizing time to complete a transaction. Interaction through third party agencies, such as escrow companies, title companies, insurance companies and recording entities, is further facilitated in a fully or largely automated processing system.

Abstract: A global positioning system based navigation system for a ground vehicle, in particular an agricultural ground vehicle such as a tractor, combine, sprayer, or the like, includes an inertial compensation assembly that provides inertial augmentation to compensate global positioning system based navigation information such as position, course, and track spacing for errors caused by variation of ground vehicle attitude (i.e., roll and yaw) over non-level terrain.