Contained is a regular .txt file with console commands, which should be placed in the Skyrim root directory (the place where TESV.exe resides). These files can be run using the Skyrim in-game console by typing:

bat ScriptName

The console is usually opened by the ~ (tilde) key. Since the name of this text file is CS.txt, the command to execute the described console commands becomes "bat CS".

Contents of CS.txt:
player.setav HealRate 1000
player.setav MagickaRate 1000
player.setav StaminaRate 1000
player.setav SpeedMult 300
player.setav CarryWeight 100000
player.setav CritChance 100
player.setav MeleeDamage 1000
player.setav UnarmedDamage 1000
player.setav DetectLifeRange 1000
player.setav BowSpeedBonus 0
player.setav WeaponSpeedMult 5
player.setav LeftWeaponSpeedMult 5
player.setav ShoutRecoveryMult 0
player.setav MovementNoiseMult 0
player.setav CombatHealthRegenMult 1
player.setav Invisibility 1
tim

Effects of the commands, in order:
- Player's healing rate increased to 1000.
- Player's magicka regeneration rate increased to 1000.
- Player's stamina regeneration rate increased to 1000.
- Player's movement speed increased three-fold. (300%)
- Player's maximum carry weight increased to 100000.
- Player's critical hit chance set to 100%.
- Player's bonus melee damage set to 1000.
- Player's bonus unarmed damage set to 1000.
- Player's detect life spell range set to 1000.
- Using the right mouse button to aim freezes time.
- Player's weapon speed multiplier set to 5.
- Player's left hand weapon speed multiplier set to 5.
- Player's shouts recharge instantly.
- Player's movement makes no noise.
- Player's heath regeneration does not change in combat.
- Player is rendered undetectable to NPC AI.
- Player is rendered immortal. (can not die from HP loss)

More about the console here:
http://uesp.net/wiki/Skyrim:Console

More about actor values here:
http://uesp.net/wiki/Tes5Mod:Actor_Value_Indices