Corridor 7

I was wondering, which file are you supposed to open to see the graphics tiles? Just out of curiousity, I tried every single file in the Corridor 7 directory and none of them worked (The game works fine, though, so it's nothing wrong with the files). XWE says it supports Corridor 7, so am I missing something?

I only have the demo version, it's in GFXTILES.DMO. When you click File|Open from XWE, the file may not show up in the list right away. Select "All Files" under Files of type. To view the images with the correct palette, click Image|Select Palette and choose "corr7" from the list.