[jonnyl]

I've noticed that the gap between the two columns varies by book, when I use the two-column mode on epub documents. Few books have a narrow gap (which I prefer), but most have a rather wide one. I've played around with various settings, such as L/R/T/B margins, font size, line spacing, etc., but the width of the column gap remains unaffected.

I am wondering what determines the width of this gap? And is there any way to adjust it? In most books the gap is too wide for me and I'd prefer it to be narrower.

Thanks for any help,
Jonnyl