How do you sort textures into categores?

I'm currently compiling a set of textures and I was wondering if it's possible to sort these textures into the predetermined categories that you see in Doom Builder(Brick, Wood, etc). I know that the Community Chest 4 texture pack had some textures sorted into the categories, but I can't figure out how it was done. Can anyone help?

Go to game configuration in GZ/Doom Builder 2, select a config then go to texture tab on the right. There you can add your own texture category or add some to the preexisting categories

Wow, that's new. X-D Does this carry on into other people's systems?

Well, if you'll make a custom DB config with new texture categories and include this config with your wad, then people could use this config to see new categories. :)