diff --git a/Texassemble.md b/Texassemble.md
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@@ -16,7 +16,7 @@ The file-name parameter indicates the file(s) to use to create the assembled ima
 
 # Commands
 
-**cube**: Creates a cubemap. Must have six images to form each of the six faces.
+**cube**: Creates a cubemap. Must have six images to form each of the six faces. Faces are ordered as follows: positive-x, negative-x, positive-y, negative-y, positive-z, negative-z.
 
 **volume**: Creates a volume map. Must have at least two images and the number of images determines the 'depth'.