1. press new game or continue game
2. go to options and turn on in game console (it says concole ~.ingame)
3. while playing press
portalproof - shoot portal on black walls
showmapbox
showportalbox
showdynamicbox
showsteps
showshots
createcompanion
lolcopter
Foamy
noclip= no walls or gravity
god= invincibility
gravity #(space between gravity and number)
restartlevel
nextlevel
prevlevel
gotolevel #(after typing gotolevel you have to space once then enter 0-41)
createbox
createturret -
createball -
removebox
removeturret
createcompanion
thisismadness= suicide(its funny)
ZOMG
thats all i could find, if you find more post them here
[and if you are curious about game heres url]
http://portal.wecreatestuff.com/portal.php