[##:##] Command : improve <road|rail|defense> <SECT> <NUM>
The improve command allows you to improve the efficiency of the infrastructure of your sectors.
The infrastructure of your sectors affects how well they defend, and how easy it is for you to move various commodities/vehicles (land units) thorough them.
To improve a sector, you need (most likely) lcms, hcms, mobility and money. See "info show" for the various costs.
Whenever you tear down a sector, the infrastructure is left in tact. The only way that infrastructure goes down is when the sector takes damage.
See also : sinfrastructure , census , commodity , resource , Sectors , Infrastructure , Mobility , Commodities