Is there any such set available for ET ?
I know such textures from Hammer Editor, they basically show the blocksize and also some do show stair-heights, door-heights and other things. They are all just to be used when mapping, and to be replaced by real textures later on. But they are very useful to get the sizes right in a intuitive way.
I don’t know if there is a special terminology for that… so its hard to find infos.
But I guess these are not available yet…