Cube Demo on ISIS Workshop - Isis Cube Format wiki page needs instructions
The Cube Demo on the ISIS Workshop wiki page (https://isis.astrogeology.usgs.gov/fixit/projects/isis/wiki/Isis_Cube_Format)
could use a paragraph-or-so of directions: what you should see when you press +/- line, sample, band, and drag the DN bar around.
It's confusing (but correct) that the image-square appears to get smaller when you add a line or sample, so the description should
mention this. Additionally, I could not figure out myself what the DN-sliding bar was supposed to do, so a description of what that
does should also be in there.