… readers can and should participate in the typesetting process … influencing or overriding our design decisions about font-sizes, line lengths, colors, and more. … Reader participation is the new magnifying glass. The new bedside lamp. The new refolding of newspaper pages. People will read however they feel most comfortable. Allow for this reality, and elements of your design will endure; Resist it, and your design will be replaced by more comfortable experiences. Tim Brown.