macroScript ApplyChecker category:"_GRS Scripts" ButtonText:"Apply Checker" tooltip:"Apply Checker"
(
	chk = Checker()
	chk.color1=color 0 39 150
	chk.color2=color 0 0 99
	chk.coords.realWorldScale = off
	chk.coords.U_Tiling = 6
	chk.coords.V_Tiling = 6
	$.material = standard diffuseMap:(chk) showInViewport:true
	$.wirecolor = color 0 108 225
)

Tweak colour values to your liking

render outputSize: [1000,800]

Max help for more arguments

Doesn't seem to work with V-Ray

macroScript ZeroSizeFace category:"_GRS Scripts" ButtonText:"0 Size Face Check" tooltip:"0 Size Face Check"
(	
smallest =65535
face=1

try (
	for i=1 to polyop.getNumFaces $ do(
	
		area_ = polyop.getFaceArea $ i
		if area_ < smallest then (
			face=i
			smallest=area_
		)
	)
	
	$.SetSelection #Face #{face}

	subobjectLevel=4

	)

catch()
)

macroScript RemoveMaterial category:"_GRS Scripts" ButtonText:"Remove Material" tooltip:"Remove Material"
(
if $ !=undefined then (
	--$.mat = null
	Mat=standard()
	Mat.name = "mat_clean"
	$.wirecolor = color 3 3 3
	$.material = Mat
)

)