All times are measured in seconds. UTC 1 Jan 1970. All money is measured in compucredits, a fictitious unit. All computational work is measured in computrons, a fictitious unit. For now, a computron is nominally one clock cycle, but a more accurate measure may be defined in the future.
All floats are non-negative unless otherwise specified.
We'll define these later. If reaction is accept, the terms of the offer become a contract binding on both parties. See the executor interface. Otherwise, it is merely a hint, providing an example of terms that would be acceptable or unacceptable right now. Some of the other terms are specified relative to this.