Keep the multicolumn button in Windows 8.1 and 10 so that font and background colors of Windows will show in display of publications.
I use high contrast black with white font in Windows 8.1. Multicolumn mode is only mode that will give me the black background with white font in publications on JW Bible Reader. Because I use a larger font size in JW Bible Reader settings, only one column is displayed when holding tablet vertically. When turning tablet to view horizontally, then multiple columns is displayed. How about renaming "Multicolumn" as "Windows Colors Display" and remove the multiple columns feature only? A choice of 1 or 2 columns could be an additional feature that can be added to JW Bible Reader "Settings". One column is good for vertical, and 2 columns in horizontal would be preferred by some.