possible codes: state salary, governed population, land, none. 'State salary' can be paid either in currency or in kind (e.g., koku of rice). 'Governed population' means that the official directly collects tribute from the population (for example, the 'kormlenie' system in Medieval Russia). 'Land' is when the bureaucrats live off land supplied by the state. 'None' is when the state officials are not compensated (example: in the Republican and Principate Rome the magistrates were wealthy individuals who served without salary, motivated by prestige and social or career advancement).