Add two-column view option
Which would act as a two-page ebook view, making longer texts such as novels and short stories easier to read. Current display mode perfect for newspaper stories etc but is slightly too snappy for the above sorts of texts.
Tom Robinson commented
That is, support for wider columns, when desired. Readefine readjusts the number of columns it displays according to window size, in order to approximate newspaper column width. It would be helpful to have a setting whereby it approximated book-page width (say, two halves of a regular-sized laptop screen).