Plots are basically chunks that are claimed by a town or nation. You can use
/town claim to claim a chunk for your town, and
/nation claim to claim a chunk for your nation.
/plot info View plot data and other details
/plot sell [amount] Sell the plot for a price. Only type
/plot sell to take it off sale.
owner <username> Set a new owner for this plot.
permissions <build/break/interact/purchasable> <everyone/mayoronly/nation/town> Set permissions for this plot.