Whenever the developer gets around to it. He usually takes 3-7 days. Worth the wait of course
you have to cyt
no
Single player commands are needed.
it already is
You get a mod, such a Single Player Commands.
well minecraft 1.2.3 single player is beta so there are no commands hopefully in the next version
First you need to update your minefraft to 1.3.1. If you have done that you need to go into settings and turn cheat/command mode oh
you can install Single Player Commands and there is a freecam option.
Use //set cobblestone.
do /clear inventory or just /clear
In multiplayer, commands are generally started with a "/" Single player commands have not yet been added, unless you get a mod that has commands, like WorldEdit. They will be added in the next update, 1.3.
Try a mod. You could use InvEdit or SPC (Single Player Commands).