Understanding Coords

I used this code to see what the default Coords are in Blitz and as I suspected, what I thought was the correct system was wrong, I think I was thinking too much 2d system where the Positive Y goes downward and trying to translate a 2d system into 3d, got me all messed up.

heres the code...

Graphics3D 1024,768,32,1
SetBuffer BackBuffer()

Cone = CreateCone()
PositionEntity Cone,0,0,0
EntityColor Cone, 255,0,0


Sphere = CreateSphere()
PositionEntity Sphere,0,0,0
EntityColor Sphere, 255,255,0

Cam = CreateCamera()
PositionEntity Cam, 0,70,-70

PointEntity Cam,Cone

While Not KeyHit(1)

	If KeyDown(200) ;up arrow
		MoveEntity Sphere,0,1,0
	EndIf

	If KeyDown(208) ;down arrow
		MoveEntity Sphere,0,-1,0
	EndIf
	
	If KeyDown(203) ;left arrow
		MoveEntity Sphere,-1,0,0	
	EndIf
	
	If KeyDown(205) ;right arrow
		MoveEntity Sphere,1,0,0
	EndIf
	
	If KeyDown(12) ;minus
		MoveEntity Sphere,0,0,-1
	EndIf
	
	If KeyDown(13) ;equals
		MoveEntity Sphere,0,0,1
	EndIf

	RenderWorld

	Text 10,10,"Camera Coords: "+EntityX(Cam,True)+", "+EntityY(Cam,True)+", "+EntityZ(Cam,True)
	Text 10,50,"Spheres X, Y, Z: "+EntityX(Sphere,True)+", "+EntityY(Sphere,True)+", "+EntityZ(Sphere,True)
	

	Flip
	
Wend

and the correct coordinate system would be...



Thanks everyone for your help there and sorry for being so confused, lol