So if you do not know how to open up the cmd, you need a chatpad for your controller or a USB keyboard, and you press the left shift, then will open up the cmd..

Here are the codes.(Not caps sensitive.)


Help: Help - Displays commands
Clear text from CMD: CLS - Clears command screen.
How to add water: addwater iamnotafraid - adds water to highlighted spot, be careful with this one.

Spawn commands:
Spawn cats - Just spawns matrix cube aka nothing.
Spawn minecarthighdetailmetal - Spawns metal minecart, minecart doesn't do anything.
Spawn minecarthighdetailwood - Spawns wood minecart, minecart doesn't do anything.
Spawn verticaltorch - Spawns a normal looking torch but it only makes the torch noise no light is given off.
Spawn electriclight - Spawns a electric light no light is given off but it is larger.
Spawn trackstraight - Spawns straight minecart track, track does nothing.
Spawn trackcorner - Spawns corner minecart track, track does nothing.
Spawn destructoray - Spawns Ray gun relic you can't pick it up.
Spawn freezeray - Spawns Freeze ray relic you can't pick it up.
Spawn jetpack - Spawns Jetpack relic you can't pick it up.
Spawn speedboots - Spawns Speed boots relic you can't pick it up.
Spawn SpringBoots - Spawns Spring boots relic you can't pick it up.
Spawn Waterboots - Spawns Water Walk relic you can't pick it up.
Spawn Nightvisiongoggles - Spawns Night Vision relic you can't pick it up.
Spawn MinersHelmet - Spawns Head Light relic you can't pick it up.
Spawn tntdetonator - Spawns Tnt Detonator relic you can't pick it up.
Echo: echo "enter whatever text here" - No quote marks displays whatever text in the cmd.
POS: pos ???? - I'm not sure how to use this one but it sets location.
Time: Time # - Elapses amount of time of the number you entered.
Time 100 - Night time. Time 900 - Day time. SetTnt: SetTnt # Confirm - Sets TNT explosion size, can cause instability WARNING!
Fill: fill <block> X Y Z - Fills with the block you put in the size you entered.


Enjoy

Hope It Helps