Improving Usability of Math Editors

WYSIWYG mathematical editors have existed for several decades. Recent editors have mostly been web-based. These editors often provide buttons or palettes containing hundreds of symbols used in mathematics. People who use screen readers and switch devices are restricted to semi-linear access of the buttons and must wade through a large number of buttons to find the right symbol to insert if the symbol is not present on the keyboard. This paper presents data gleaned from textbooks that shows that if the subject area is known, the number of buttons needed for special symbols is small so usability can be greatly improved.