Airbase|Aquifer|Bunker|Condenser|EchelonMirror|Farm|Forest|Fungus(Plant or Remove)
Magtube|Mine|Road|Sensor|Solar|Terraform (Down or Level or Up)|ThermalBorehole|TidalHarness

Decreases the altitude of the square by about 1000m. Surrounding squares are also affected to "fit" into its lower altitude. There is a "cost" that also must be paid.

Only a Sea Former can lower terrain into the sea from a square next to the land square. It also affects squares around it.

Secret Project Weather Paradigm allows you to use this command before you discover the prerequisite plus it will be completed twice as fast.

Use a Sea Former to "sink" an enemy coastal city.

A second Former allows the process to be completed twice as fast.

http://forums.delphi.com/m/main.asp?sigdir=alphacentauri

Decreases the rockiness of a square. It can turn rocky squares into rolling squares which can then be farmed.

http://forums.delphi.com/m/main.asp?sigdir=alphacentauri

Increases the altitude of the square by about 1000m. Surrounding squares are also affected to "fit" into this higher altitude. There is a "cost" that also must be paid.

This can turn a sea square into a land square.

http://forums.delphi.com/m/main.asp?sigdir=alphacentauri