Action:  LAB>L overlay
		Duplicate first document
			Name:  “Apply LAB to L in Overlay blend”
		Flatten Image
		Convert Mode
			To: Lab color mode
			With Flatten
		Image Size
			Width: 400 pixels
			Height: 300 pixels
			Interpolation: bicubic
		Canvas Size
			Width: 1204 pixels
			Horizontal: left
		Set Selection
			To: rectangle
			Top: 0 pixels
			Left: 0 pixels
			Bottom: 300 pixels
			Right: 400 pixels
		Copy
		Paste
			Anti-alias: none
		Select lightness channel
		Show a channel, b channel
		Apply Image
			With: calculation
			Source: a channel of merged layer
			Calculation: overlay
			With Preserve Transparency
		Select Lab channel
		Move current layer
			To: 402 pixels, 0 pixels
		Hide current layer
		Select Background
		Set Selection
			To: rectangle
			Top: 0 pixels
			Left: 0 pixels
			Bottom: 300 pixels
			Right: 400 pixels
		Copy
		Paste
			Anti-alias: none
		Select lightness channel
		Show a channel, b channel
		Apply Image
			With: calculation
			Source: b channel of merged layer
			Calculation: overlay
			With Preserve Transparency
		Select Lab channel
		Move current layer
			To: 804 pixels, 0 pixels
		Hide current layer
		Select Background
		Select lightness channel
		Show a channel, b channel
		Apply Image
			With: calculation
			Source: current channel of merged layer
			Calculation: overlay
			With Preserve Transparency
		Select Lab channel
		Show layer “Layer 1”
		Show layer “Layer 2”
		Flatten Image