[citac]

There's another thing that bothers me: when I hook up my keyboard, hitting page down button only moves the right column in two column landscape mode. Have I missed a setting that would move both columns?

ETA: OK, never mind, just checked again and now Mantano doesn't have that problem. I have to check my other readers now.

ETA2: My cold must be affecting me more than I thought: I have both Moon+ and Mantano open now and I'm obviously mixing up the two: it's Moon+ that doesn't scroll two columns correctly using a keyboard, and as for series, I suspect it would still have to be edited with calibre to add series info.