Axon Content

Hi,
i'm sure this information is somewhere but i can't find it.

1.Is the stock content on an an axon/DL-2 suitable for collage?

2.If i make a custom mask using a .png file from photoshop that is going to be used as a mask in collage mode,either 2 x 1 or 1 x 2 do i use the settings suggested here
www.highend.com/support/digital_lighting/CreatingCustomContent.asp
or should i use something else?
I understand i will be using one of the three layers to use this mask which is not really an issue.

thanks C