Each pack will contain a download link (duh) which will have a short demo level in addition to the lua thing itself.
Pull Stars  / Push Stars :
Click on the blue Pullstars to be pulled towards them. Click on the red Pushstars to be pushed away from them.
Credit: Help from Hoeloe, Pixelpest, MrDoubleA
OFF Red Torches  / ON Blue Torches  / OFF Yellow Torches  / ON Green Torches 
Click on the torches to toggle the pairs: Red <-> Blue / Yellow <-> Green.
Credit: Help from MrDoubleA, Hoeloe / Spawnzones.lua, created by Enjl, is required for these to stay synced