Below are the textures that create the unique Flatland landscape for the interior blockset. You can use these default textures anywhere in your spots by simply preceding the texture name with the "@" symbol and the name of the blockset, like so:
TEXTURE="@interior:moniterside.gif".

blackcushion.gif	blackglare.gif	blueprint.gif	bluevelvet.gif	brick2.gif
cabinetfront.gif	cement.gif	computerback.gif	computerfront.gif	computerside.gif
controlpanel.gif	cushion.gif	desktop.gif	door.gif	drawer.gif
fananim.gif	finishedwood.gif	finishedwooddark.gif	firey.gif	frontfire2.gif
grill.gif	keyboard.gif	knob.gif	lightmetal.gif	lightyellow.gif
litewood.gif	logo.gif	metal3.gif	metalbolted2.gif	moniterside.gif
pillow.gif	redglare.gif	redsheet.gif	sheets.gif	tvlogo.gif
	whitesheet.gif	woodfloor.gif	yellow.gif