Can someone please explain this script to me

Help and Feedback Scripting Support
#1

Can someone please explain the following code:

game:GetService(“RunService”).RenderStepped:Connect(function()
if (cam.Focus.p-cam.CoordinateFrame.p).magnitude > 1 then
hum.AutoRotate = false
if Mouse.Hit.p ~= prev_mousehit then
waist.C0 = CFrame.new(waist.C0.p, Vector3.new(Mouse.Hit.p.x,Mouse.Hit.p.y,Mouse.Hit.p.z))
prev_mousehit = Mouse.Hit.p
end
else
hum.AutoRotate = true
end
end)

#2

Full code:

local cam = game.Workspace.CurrentCamera
local equipped = false
local waist
local hum

player.CharacterAdded:Connect(function()
	character = player.Character
	waist = character:WaitForChild("UpperTorso"):WaitForChild("Waist")
	hum = character:WaitForChild("Humanoid")
end)

local Mouse = player:GetMouse()
local prev_mousehit

game:GetService("RunService").RenderStepped:Connect(function()
	if (cam.Focus.p-cam.CoordinateFrame.p).magnitude > 1 then
		hum.AutoRotate = false
		if Mouse.Hit.p ~= prev_mousehit then
			waist.C0 = CFrame.new(waist.C0.p, Vector3.new(Mouse.Hit.p.x,Mouse.Hit.p.y,Mouse.Hit.p.z))
			prev_mousehit = Mouse.Hit.p
		end
	else
		hum.AutoRotate = true
	end
end)
#3

I’m not sure but i. found a forum post that might help Trying to rotate body to face the mouse and getting "interesting" results