Removing walls that don't have an invisibility option

Sometimes a building doesn’t have the option to make its walls invisible (so you can’t pull back the camera to render larger sections of the inside rooms). I believe in the past I came across a tool or option in DAZ that lets you temporarily slice off a section of an object - either horizontally or vertically. I remember slicing off the front of a two story building so I could see inside. Does anyone know where that tool or option is?
Comments
Does Geometry Editor sound familiar? I've used it to temporarily hide polygons before.
The Geometry Editor does let me make walls invisible, which is a step in the right direction. But it makes all of the walls invisible on the building that I am trying to look inside. So I can’t render since there is no back or side walls.
I remember the instructions that I read said that this “Option” will slice away everything in its path. So if you have a two story building and you only want to see inside the first floor - it will also remove the front of the second floor.
I remember slicing away the front and being able to see the inside room contents including the back wall and side walls.
But thanks for the Geometry Editor tip - if I want to render an interior scene looking almost straight down through the now invisible roof (with no walls) at least this will work.
The Geometry Editor can be used selectively, but what you are thinking of is, I suspect, the Iray Section Plane from the Create menu
That's what I was looking for! Thanks Richard!